Nice work Pete, I like both, but the top one I prefer.
For my glue chucks I'll use an X of double sided tape on the waste block, cut about a 1/16" pellet off a glue stick, space each between the tapes, I'll hold in place with a small screwdriver, as I melt them with a heatgun, get them nice an hot, not to burn, warm the blank to turn and stick together, once colded turn as you've said, it works fine and has been safe for me.
David