Ok.
If you haven't used a microtech UT-6 as an EDC carry for utility use, then you have no idea how convenient the dang thing is. Not just convenient, but safe.
It goes beyond one hand opening or speed.
1: It is virtually impossible for it to open accidentally due to the amount of force needed to push the button forward.
2: When you take it out of your pocket and hold it ready to open, it is in a firm grip.
3: When firing the blade out, it remains in a firm grip. At no time is any part of your hand in the blade path.
4: Once the blade is out, the knife is already firmly in hand and ready to use. No shifting of grip necessary.
5: When you're done, give the blade a quick wipe (as you always should), and retract it. No grip change necessary. No fingers ever in blade path.
6: Stick back in pocket. No chance of the blade partially being open, or snagging. Just stick it back in. If you miss the pocket or sheath, you didn't spear yourself like you would with a fixed blade.
Compare this to a manual folder: Takes two hands. When releasing the lock, your hands are often in the way of the blade's folding path. Think about how you close a swiss army knife or a lockback. You release the blade, get your fingers out of the way, and then close it. Liner lock? Push the liner out of the way with your thumb, partially close the blade to engage the liner, then move your thumb out of the way, then close it. Axis lock? You still have to change your grip to get your fingers out of the way.
Are any of these issues a big deal or huge safety issue in everyday life? NO. But, accidents do happen. I bet more than a few of the people reading this have been 'bitten' by their knives while carelessly or hurriedly folding them. Or thrown them across the room while flicking them open one handed.
The fact remains. A knife you can open one handed is genuinely useful. A knife you can open and close one handed is even more useful. A knife you can open and close one handed quickly and reliably, with perfect confidence that you are never in any danger of cutting your fingers in the process is really really really useful.
If you think otherwise, just try carrrying one for a few days. I used to carry spydercos, benchmade liner locks, side auto-openers, fixed blades, swiss army knives, what have you. After a few days of using the UT-6, it went straight from "a nice curiosity knife that I'll keep in the drawer so it doesn't get scratched up" to "EDC, cut whatever I need it to."
It's too small to really be a SD knife. It's not a prybar. But for opening packages, cutting sushi for my kid, general utility purposes, whatever, it's so much more convenient than anything else I've EVER carried. And I resent the fact that people think they should be illegal because 'nobody needs a knife to open that fast'.
Edited: reminds me. Gotta go clean the dried avocado off of the blade.