It occurs to me that somebody with a 3D printer and a huge predilection for cutlery related nerdery could probably make custom replacement lock toggles for these pretty easily. Now there's something to think about.
Indeed. I mean the printer is likely just sitting there waiting for another new project to be worked into the queue, right?
Nice write-up and it's good to hear it's so easy to take apart (and hopefully all their glyde locks are like this).
The Penguin was my first QSP purchase, in 2021. They had a pretty good hit on their hands and were putting out decent varients. I think only the liner lock version was avaialble then. I held out for one with green micarta scales. The micarta is fairly smooth and at first I thought it was going to be slippery but that's not proved to be an issue.
About a year ago I got the mini Penguin in the green micarta. It's been a great little 5th pocket carry. Not sure if it was based on feedback or just they decided to change it up but the micarta was not as smooth and much more to my liking (especially for a smaller knife).
Most recently (May) I got one of their 4" paring knives in 14C28N. Very thin and slicey blade and the edge retention has been excellent. (As an aside, they list it as a Kiritsuke but it's double-beveled so I think technically it's not a Kiritsuke? I'm not a kitchen knife person so I don't know.)
Edit: they do also make a slip-joint version of the Penguin which is supposed to be excellent.
QSP is the OEM for others. In particular I know they made the Stump Lifter and the upcoming Stump Fish for Advanced Knife Bro.