Well... some guns are biters.
I've got permanent scar tracks between my trigger finger and thumb from years of being zapped by 1911s. A Hi-Power will give you a vicious pinch between a spur hammer and top of the grip, and a Walther PPK's slide is about as sharp as a straight razor.
I'd put on a pair of shooting gloves, and give that Sig P-210 another go.
My German Border Patrol police trade-in P7 PSP was only $650 and came with everything (box, papers, test target, German duty leather, take-down and cleaning tools, and extra mags). I might add that it was in mint condition internally -- couldn't tell if it had even been fired. The exterior finish was about 95%.
Deals like this are drying up, but you can still run across one occassionally. I know of a dealer locally that has two more examples of these finds at similar prices if you are interested.
for me the worst of the "hammer bite" has always been from my Walther PPK/S. I have tried the pachmeyer grips and hogue add ons and still i have a permanent scar from it. I like the gun although now with the P3AT I feel that the Walther might be seeing a decline in sales for compact pistols.
Actually, the PSP really isn't a "variant" at all.
It's simply the European version, with a butt-mounted mag release.
The P7-M8 is exactly the same gun... with a thumb mag release.
The PSP is still made and sold in Europe.