Actually barry wicks isn't too bad at technical stuff that "only non XCers" possess. When I rode with him, he did a manual for quite a while, on his CROSS COUNTRY BIKE....... did I mention clipped in?
it's very common. i spent a little bit of time this offseason working on pogo's...on my xc bike, while clipped in. im actually pretty good now on my xc bike, but on a trial's i can rip it. keeping in mind i am a weight weenie and such a trick will NEVER help me in a race.....point is, if your a true cyclist, you can rip it on anything.