Depending on the condition of the P22, it sounds like a fairly even trade. The KT P32 is a good pistol for what it is. Reliable, little recoil, and decent capacity for tiny gun. The only way to go smaller and maintain more than 2 rounds is with the NAA Minis, although I would rather carry a P32. Get the belt clip and it will be nearly invisible. For summer carry, I would recommend the chrome slide. BTW, load it with Fiocchi FMJ 73gr.