bimjo, you are a genius! I was trying to think of how Peter could drill a 1/4" bolt sized hole for turning 1/4" bolts, but a tapered slot would be way cooler! A Kydex sheath would grab the slot nicely too...
Peter, I also thought that maybe you could put a wire stripping knotch somewhere on there, maybe on the side of that opener/chisel that doesn't touch the bottle cap.
If I can think of any more tools, I'll be sure to post 'em here. Keep up the awesome work Peter! And seriously, you may want to shop that around to the knife manufacturers. Did you read the article in Tac Knives about the Spyder Wrench? That was a great article, seeing the evolution of that tool. Go for it Peter.