yup, I am a sock-puppet of FFF, I carry Kershaws and nothing else has satisfied!
My current one is a Ken Onion design:
they have a cam-actuated opener which is just the shape of the blade where it sockets into the handle. It is a fantastic design and very easily opened with one hand.
They make others that have a finger-tab on the back that you can sweep the knife open with but-like Cassius- I find it can occasionally snag on clothing and partly open up.
btw, I am a carpenter&tradesguy by day and a Sambo dude by night and do not get into Krav-Silat duels or any **** like that. Kershaws are very nice knives.
Tanto styles are silly IMO but this is a decent review, LOL@the dude who commented "I hate it when people eat when making a video"
YouTube - Kershaw Blur knife review
also, knife people are such oddballs!