7D Owner Spent 30 Mins with the 6D

Soooooo tempting.

95% of my pictures are taken indoors without flash.  Unfortunately, 80% of those are of fast-moving action.  Also in the way of going FF - my EF-S 17-55 f2.8

I have four lenses, two of which are EF-S, but that 17-55 is my only concern.  I suppose that I would also lose reach for my 70-200 f2.8 IS II...and that would also not be great.

But man...that high ISO looks awesome.  I'm afraid to go over 1600 on my 40D on most shots.

A preview review with specs for a future 7D Mk 2 would really help my willpower here...because that 6D is looking very tempting...even with lower FPS and (supposedly) lesser capabilities for autofocus.