Yes, I started another thread about it: Engraved shot glasses
I haven’t made the 20-glass jig. I’m still dialing in the settings but I’m getting pretty good results using a 1-glass jig. Through experimentation, I found I needed to make some minor adjustments to the jig. Anyone who gets shot glasses from another source will have to confirm all the measurements.
But the concept is sound and is working on a production Glowforge.