Doing A Walking At New Moon Options

I know this is a stupid thought, but what do you guys think would occur if one were to do a walking at New Moon. I figure a disaster. but what if one had crossed the Abyss/gone into GANZIR? Would the priest have the capabilities to take on a gate at the time of the Bitch of the Black Moon?

I suppose the important question would be. Has anyone actually done it at New Moon? Foolish Yes. Dangerous Yes. But has it been done and most important. What happened to those that did the dark walk? Questions questions.
gmcbroom

PS- I hope that wasn't off topic. If it is, I humbly apologize.