Minor progress report:
I have now printed the cylindrical dust shoe, but not tested it yet. I like where this is going though, it already feels better than the old Suckit-style shoe, while retaining the fixed-Z height feature :
The two part design turns out to be a convenient enough way to install/remove the dust shoe (well at this point it’s not really a “shoe” anymore). I sacrificed the bristles strip from my old Suckit, cut it in two segments and it fit perfectly.
Next step: testing. I really hope I won’t be disappointed by the performance (yet I know that the quest for the perfect dust shoe follows a long and winded path…we’ll see)