I've got close to 1,000 rounds through mine - so here goes:
1) Easily the smallest grip available on a double column 45 - if you've handled a 9 or 40 it feels identical
2) Mine has been totally reliable
3) trigger pull is heavier out of the box than my 9 was, I've polished it up but it's still heavy - next step will be an Apex sear
4) Capable of exceptionally good accuracy, but the trigger weight is an impediment
5) if you don't have an Uplula, go get one - if you think the 9/40 mags are hard to fill, you're in for a shock
6) Parts are not as readily available - mags are scarce, and so far spares are uncommon here.
I really like the gun, the recoil is actually soft even with full power 230 JHP, very fast follow up shots are a breeze. Apart from the trigger weight and having to order and wait for spares there really isn't a down side to it.