Kershaw Funxion DIY. Interesting little tool.
The main blade is assisted opening, and VERY quick and firm to boot. Very nice edge out of the box, not quite shaving sharp, but pretty close. There was a little bit of side-to-side blade play, but a tiny adjustment of the pivot screw fixed that with no effect on the assisted open.
The carabiner locks in position, but doesn't in itself lock. Still a good, firm spring, so I don't anticipate the 'biner failing. It also acts as a blade safety when opened.
The single flat blade screwdriver is decent. Not the strongest around, it has a bit of flex under both torque and lateral pressure. I'd say... medium duty at best.
The 1/4" hex wrench on the same tool is a bit more robust. The lockup when using it as a wrench is much more solid than when using the flathead or as a prybar. Nicely fits a quarter-inch bit extension to make it a good little multipurpose wrench. Haven't tried the bottle opener yet, but it looks good, nice defined lip and good leverage.
Overall it has a very nice feel in the hand, extremely comfortable to use as a knife. The rubber inset gives pretty good grip for all of the tools. The belt clip is very good, nice grip, low riding, and unobtrusive.
Funny thing about it-- it's 100% one-handable if you're left handed! Righties, I don't think would be able to manage the screwdriver one-handed, but the 'biner is easily manageable by a lefty rotating it out towards the palm. Only drawback for a lefty is, the belt clip is not reversible.
It does have a couple drawbacks. The aluminum scales have a little bit of a, well, lightweight feel. There's no flex, but the feel when running your fingers along the scale is somewhat underwhelming. There are also a few fit-and-finish shortcomings-- the blade centering is not perfect, and there are a few gaps where the scales meet the liners. Overall, though, it's a nice tool. Not as good as a Select Fire, but I think it's only the second assisted-opening multitool, after the Powerassist. And it's a MUCH better knife than the Powerassist.