I've done Debauchery three times I think, though not for a while, and thought it was fantastic every time.
I can see that it would be easy to get off line if you have several grades in hand. If you're at your limit it is much less likely. Bear in mind it is one of only two mid-grade routes up the face and Original route is something of a polished thrutch. Everything else requires a big step up in ability and stamina.