I'll try to take a photo of my stock steering wheel at lunch and post it up so they can see what I mean. I'm not entirely sure if I can capture it in a photo, though.
Basically, the SS is sunk into the wheel so that if you run your thumb from leather to the metal symbol and back to leather again, it's all flush, but the symbol itself looks like it's probably about 1/8" thick.
I know it's a pretty small detail, but I know how fickle some prospective buyers are