I'm in the market for a new bike. And I have narrowed it down to the Epiphany. My question is though, are they durable? Can they be jumped? Are they durable enough to take on verry agressive trails like single and some double black diamond trails at Mammoth. I like to ride aggresive trails but I like to work for my DH though. I just want to make sure this bike can hold up. I saw a guy this past weekend at Mammoth with one. But I didn't have a chance to talk with him. The bike looked like it had been threw some gnarly stuff. So is there anyone out there hammering on these bikes and how are they holding up to the abuse?