I just recently received a ZT0301. I haven't had the opportunity to actually use it for anything, but I have carried it the last few days.
Definitely a large knife. I normally carry a Spec Bump, the 0301 is about 1/3rd again wider than the Spec Bump. They are actually about the same thickness, the 0301's blade is thicker, the difference is made up by having one less liner.
The clip is very small for a knife this size, about 2 inches by a bit less than half an inch. The small size has the dual benefits of higher tension and being less conspicuous. If you only saw the clip hanging out, you'd never know how big this knife is. The knife is drilled and tapped for tip-up, tip-down left or right side mounting of the clip. The stock position of the clip is ideal for the way I carry, tip down, left front pocket, blade against the seam.
I really like the combo of 3D machined G10 on one side and matching titanium on the other. I think this would be a great solution for the smaller knives that everyone wants in a frame lock but want G10 scales. The framelock side wouldn't need to be titanium, to keep costs down it would be whatever the current material is. This build ought to be easy to do with any models that have had a framelock and liner lock version. Having said that though, the finish on the Titanium on the 0301 is so nice, I'd love to see some other knives completely handled in the same material and finish.
Out of the box everything on mine seems to have been adjusted perfectly. Blade is well centered, pivot tension is just right, framelock engages perfectly . Opening the knife normally, the framelock engages more than 2/3 of the locking surface of the blade with no visible gaps. When released the lock disengages smoothly. Even when squeezed in fairly hard (outside of lock bar flush with side of blade), I haven't had to resort to anything more than heavy thumb pressure to release it.
The blade measured about 0.156" thick. (vs. Spec Bump at 0.125").
I'm not sure if it's some sort of optical illusion caused by the stripes or the shape of the blade, but just staring at it I'd have sworn that it was hollow ground. If I lay a straight edge on it though, it is definitely flat ground. The grind leaves the knife with a robust tip that should be up to most penetrating tasks. The edge on this blade seems pretty much perfect. I know we are getting used to superlatives about Kershaw's out of the box sharpness, but this one is really, really sharp.
The thumbstuds are a little different than the ones illustrated on the web site. Mine are pretty much concentric stacked disks (ZT site shows diagonal grooves). The index flipper is a bit larger than that on most other SpeedSafe knives, closer to the size on a knife with a manual flipper. The thumbstuds and flipper seem to be sized appropriately for gloved use.
The SpeedSafe works as expected. There is a lot of blade to move so don't expect it to open like a Leek. On the other hand I think most complaints about the speed of large AO blades can be addressed by looking at how people are opening them. If you are just pressing on the flipper until the SpeedSafe engages, of course a big blade isn't going to be fast. If you use the flipper with a bit of authority the blades will definitely move.
As I said before, there is a lot of blade to move, so expect a kick.
I think that the fit and finish of this knife are indicative of that extra bit of care and attention to detail that you'd expect of a knife advertised for use by people whose lives may depend on it. I'll definitely be looking at the rest of the ZT line.
When I get the chance to shoot some close-ups of the knife I'll post a thread of them.