I like the ones with the push to lock feature. I dont think it would work for stomp box purposes because the knobs would stick out too far from the box surface, but they would work well in some rack gear where you could set the pots into the enclosure a little further.
Yeah, I didn't see those before, but that is cool. And they are fairly affordable ($2.50) and Mouser actually has some in stock. Would like to see a build with those.
The same line includes a pot with a push-on, push-off DPST switch in it, so you could make some kind of stomp switch/control knob combo (if you step gingerly). They also have one with a built-in rotary (guessing SPST) switch, multi-gang pots, and multi-gang plus push switches, etc. Really cool line, tiny, and pretty affordable compared to similar stuff from other companies.
The one I linked to says "multi-ganged", but it's just a regular single unit - I have one in my hand and it's an exact swap for the Zvex-type pots.