Own a FNP-45. Great accuracy for me, no reliability issues either. It comes with different thickness backstraps. I'm a 1911 guy. Always have been. But I just shoot the FN more accurately. I'm 6'3' and 235. So with a kirkpatrick holster made for that handgun, I'm can easily carry concealed.
I bought a FNP9 when they first came out. It was reliable but the aluminum guide rod they used got scrapped real bad when you shot it. Had good fit and finish.
Have one, what do you want to know. Bought it at Beech Grove Firearms for a good price. Shoots well, no complaints. Bulk ammo can be found and not more expensive than .40 or .45