You cannot go wrong with the G26. I prefer it over the G19. It is the back of the grip that prints, not the front. This is were the G26 is better than the G19.
If you want to use a pinky extension, then go for it. The G26 is accurate, reliable and highly concealable. I carry mine in a TT Gunleather IWB, with a G17 magazine as spare.