I went to our local photography store, and looked at several of the mirrorless cameras yesterday, thinking of getting one to replace my wife's G11, and came back discouraged.
There was nothing that could be considered ultra wide angle, many of them have no viewfinder at all, and, though the bodies are fairly small, as soon as they add a zoom lens, they get much larger. The Nikon J1 wasn't much for the price, the V1 was nicer, but way over priced, with little in the way of lens selection.
I am beginning to think Canon was wise to stay out of that market. I'll go back and look at the G1X when it comes out, but I think its also too expensive.
For now, I'll just stay with a G11 for my wife. The S100 looked to beat them all for those who want quality in a small body.
have you had a look at the fuji X10, I am loving mine
funnily enough they rate the battery life at 220 shots
at the concert I shot over 800 off 1 battery and still have 1 bar on the life by the end
I filled the 16GB card with RAW files before i drained the battery.
nothing ultra wide angle though but 28-112 is not a bad range for the little beast and the f2 to f2.8 lens is really sweet