I know what you mean about thumb studs and pocket clips, pinnah. I like the style that A.G. Russell uses on some of his lock backs. They have a cut in the blade that resembles a traditional nail nick, but it is accessible to the user's thumb. I still open my 112 with one hand, like I did before knives became, uh, tactical. Now my old thumbs could use some help in that regard.
Have you tried one of those after market thumb studs on your 112?