I have a couple older versions of this knife, with serrated blades. Flicks open with one hand, with what they call the "blade launcher". It just gets the blade started, with a slight flick of the wrist, it locks open. I have one with and without the small screw drivers. They all have the caribeaner/bottle opener. I leave it clipped inside my front pocket.
I just used it Sunday to cut some line off a permanent fender. It went through like a hot knife through butter.
$35 to $40, so losing it wouldn't ruin me entire weekend, like most "sailing" knives.
Leatherman knives: c33T/c33Tx