Nice simple chuck and the recessed clamp is a good idea.
"BUT" protrusions on lathe chucks both metal lathes and wood lathes are a given and anyone planning any turning needs to learn (quickly) how to stay out of that zone.
Just look at this spinning lathe dog.
You MUST stay out of those zones. DO NOT depend on the machine or set-up to protect you.
I keep repeating the story of the guy on another list several years ago that said cutting his thumb open on his table saw was his fault because he did not install the guard. I kept insisting that it was his fault because he stuck his thumb into the spinning blade... His thumb should not have been in the blade zone whether he had the guard installed or not. Machinery of any kind is not a case of "guard in place", I can be careless and sloppy or "guard off" I must be careful. Danger zones are still there guard or no guard and guard or no guard you should not place anything you care to keep in that zone...
I did not equip with Shopsmiths in spite of the setups but because of them.
1 1988 - Mark V 510 (bought new), 4 Poly vee 1 1/8th HP Mark V's, Mark VII, 1 Mark V Mini, 1 Frankensmith, 1 10-ER, 1 Mark V Push-me-Pull-me Drillpress, SS bandsaw, belt sander, jointer, jigsaw, shaper attach, mortising attach, TS-3650 Rigid tablesaw, RAS, 6" long bed jointer, Foley/Belsaw Planer/molder/ripsaw, 1" sander, oscillating spindle/belt sander, Scroll saw, Woodmizer sawmill