I think you are talking about the FN Five Seven not FNP.I'll register a negative opinion on the FNP just from the standpoint that you can't get the factory armor piercing ammunition the pistol was specifically built to fire. You have to get by with the "practice" ammunition. Hollowpoints, etc.
But with the non-AP ammo, you are basically shooting a hi-cap pistol with the stopping power of a .32 Magnum and ammunition that costs $40 a box or more.
My main carry gun for the last 6 or 7 years has been Sig 229, .357 power and the only jam I ever had was with reload which was not resized properly, if at all, it was too fat to enter chamber....I love my XD45. You cant go wrong with a Sig 229 or a Kimber.