My bike is a high BB one (+80) and it's a stock. It's true that it's very different to ride than a lower BB bike. Also it's true you can't push as much as you would with a lower BB bike. But it's so nice to ride for static moves. I just love it. But I love all kind of bikes. It's just that I prefer a high BB but I can surely ride any bike... I have had a few and with different geos. They were all different but each had their strong point and weak point. So a trials bike is just a trials bike. Just ddo what you can do with it. I have had too much time not having fun anymore on my bike and training hard for comps. It didn't help. Now I am having fun again and it's awesome riding a bike.
So if the man who rides that Rockman proto likes it, good for him. We should all be happy of our bike and for each other riding than argueing stupidly about this BB topic.