The back deck roll should only be used when playboating. Yeah its fast but as mentioned, you are exposing your face to potential hazards. It was initially used to roll quickly after ENDERING! Yea!
I've seen this BS espoused before. The best roll when creeking is the one that gets you up safely AND quickly. Clearly, you don't want to be floating face-down over mank, but you also don't necessarily want to be drifting into your next big class V move studiously setting up your C-C.
There is no specific paradigm as to when you should or should not use a specific roll. A good paddler with a good feel for the water innately knows what roll he should be hitting at that particular time.
I personally use a back deck often while creeking; and if you ask lotsawater's wife she will be sure to tell you that I'm still strikingly more handsome than he.