In a word, nope.I have quite a few OPT's and I don't get along with most of them. However, some are decent enough, and of those, some actually have a blade and are ok. The Raker Ring Tool/ CRKT KERT is a good example of one with a cutter that is good. The cutter is protected, so you won't (usually) cut yourself or anyone else.(Image removed from quote.)That having been said, someone here a while ago did accidentally slash the webbing handle of their bag with it and have to have it stitched back together.Other OPT's with blades are just out and out stupid. The Gatco Swiss Key Tool for example is one of the dumbest ideas I have ever seen, where it leaves an exposed blade in the exact spot you want to put your thumb when you use the bottle opener.(Image removed from quote.)As I see it, there are two options for an edge on a one piece tool:1- it is too sharp to be safe2- it is dull enough to be safe, but useless as a bladeGiven those two choices, I will always opt to not bother having an edge on a one piece tool.Def