Only one I regret, and I can't even remember the name.
It was the large Cold Steel model called something like the "Shinoba" It was a San Mai III folding tanto. It had a nail nick and everything, no stud, and no clip. But it did have a groovy nylon sheath that could be worn horizontal or vertical.
That's the one I regret trading. Doubt if I'll ever find another, and I don't know if I'd buy it again, even if I had the chance!
Edited to say: The custom/handmade part didn't register in my weary mind. Sorry.