NT1 might prove a bit too sensitive for live PA work, feedback could be a very likely big issue there, depending upon what you would intend to do with the mic. Gain before feedback isn't going to be all that great, as compared to one of the modern neodymium magnet mics (Shure Beta 58, Audix OM-5, etc.). And those are dynamic mics that don't require the phantom power anyway.

On top of that, I would never chance subjecting my recording LDC mic to the rigors of the road and changing environmental conditions that would surely entail, either. The are sensitive tools with a purpose, use it for the purpose intended -- recording. Keep it covered and away from exposure to house dust, sunlight and temperature extremes at all other times, also never drop it or place it where it can be dropped or bumped.


--Mac