I've been using a Seecamp for a couple of years now. Its a great gun. I'll never go back to packing a full size gun.
You can dry fire as much as you like just be sure to have the magazine in place.
BTW, .32acp snap caps are available from Brownell's, Midway USA, and others.
The ammo issue isn't a biggie. The guns are built so small only certain ammo will function in them. Use what Larry Seecamp recommends.
The WW Q4255 FMJ's are the only FMJ's that will function decently. All the old style FMJ's(Remington, UMC, Mil-surp) are too long in length and won't work.
The high end hollow point stuff like the Silvertips and Gold Dot's are the recommended loads for the gun. Be sure to try several different types to see which your particular gun digests the most reliably.
The Seecamp IS an unpleasant little beast to shoot for more than a couple of magazines. I've fired mine as much as 70-80 rounds in a range session. I was PLENTY ready to put it away too!
I've probably fired 800 rounds thru mine so far.
Like any other new gun you just have to get used to handling it. The trigger pull is long but not unbearable.
It sure ain't a Colt Gold Cup.
