Been using Rampardos in UU as a Stealth Rocker. He and Pinsir are the only SRers in the game that can bypass Xatu and Espeon's annoying Magic Bounce, with Mold Breaker, and that niche alone makes a mention of it necessary. Pinsir isn't as good at it because he doesn't have the move slot, when Swords Dance is his best set. However, it still deserves a mention as a slash in the last slot of the Choice Band set, and Magic Bounce should be talked about in the text, because it is a unique niche.
But this is about Rampardos, who doesn't have a UU article at all. This line in Rampardos's RU evalution: "Rampardos can use Stealth Rock with its ability to force switches, but Rampardos is better off simply attacking to outright KO any threat that stands in its way." is on the right path, but doesn't give him enough credit. The way I play him is by judging which would hurt the enemy team more, a Head Smash, an Earthquake, or a Stealth Rock. Often, if they lead with something weak to Rock, I will simply Head Smash, and never get around to Stealth Rock.
However, having SR on the set, when HS + EQ gives fine coverage, is extremely viable. I use it when I expect a switch into something that will take little damage from either of my attacks, or when their entire team seems weak to SR and it would just be better to use it. Like whoever wrote that line said, Rampardos is a good Stealth Rocker because he has the ability to force switches, even with his low defenses. They expect Choice Scarf so they don't always attack right away. Having this set in the metagame also makes Choice sets stronger due to unpredictability. Rampardos additionally has Dragon Tail, which I've used every once in a while to get rid of a pokemon with high defenses to rack up SR damage (especially Flygon who takes some damage from EQ but not tons).
I'm not sure what the current rules concerning Quick Claw are on Smogon because I've been playing on the Pokemon Online server, but that's the item I use. 20% chance can win games, but when it doesn't activate, at least you can still switch moves. It might seem gimmicky, but it's really very effective. I guess Red Card is an option if that's banned - Leftovers won't help much as you'll almost always be 2HKO'd, but with HP EVs, he can usually survive at least one attack, getting a free switch for your enemy into something that has a very high chance of being unable to take a Head Smash well.
However, I could also see throwing it on the Choice Scarf set. I think that having 3 equally viable sets will make Rampardos less predictable and lands him an easy spot in UU... and let me just end this with, Head Smash will 1HKO-2HKO a LOT of things in UU.
The set is basically 252 HP/Atk, Adamant @ Quick Claw/Red Card: Head Smash, Earthquake, Stealth Rock, Dragon Tail
(252 Def or SpD instead of HP works as well, I've been experimenting with all. His starting HP is more decent than his defenses so either one can help him survive a hit from that side a lot better. Right now in the team builder, I noticed I have it as Defense.)
Or 252 Atk/Spe @ Choice Scarf, Jolly/Adamant: Head Smash, Earthquake, Fire Punch, Stealth Rock/Zen Headbutt
This is a replay of me using Rampardos in UU to great effect against a decent team of Registeel / Flygon / Victini / Darmanitan / Azelf / Milotic -
http://pokemon.aesoft.org/replay-Baron-Corm-vs-WarwickTBH--2012-03-19
I begin by Stealth Rocking against his Registeel, as I decide that hitting his Victini and Darmanitan for 25% is more important than hurting his wall. I then Dragon Tail as I expect a Flygon switchin, but he Toxics me instead. Dragon Tail brings in Darmanitan, who expects me to switch, so he Focus Punches, while I kill him. Later in the game, my Rampardos faces off against Registeel again, and easily gets a 2HKO with Earthquake. He brings in Milotic, who expects me to be faster than him, so he Recovers to let Toxic kill me. Unlike what he expected, I was slower, and would have put a large dent in him, but Head Smash misses.
This game is a good example of how a Stealth Rocker with high attack can be less predictable and more useful than a Stealth Rocking wall such as Registeel.
P.S., I've been using the Strategydex a lot, and the phrases "middling speed" and "nothing to scoff at" are in at least 25% of the articles. Might be good to start getting away from them. I even saw Golem's speed called "middling". He's just plain slow, really.