I am still a new turkey hunter (only doing it for 4 years) and this thread really got me thinking.
I first started with a big vest with a built in kickstand (Tater).  I would usually take it off when i got to my spot so i was more able to move/twist around if needed or if i was gonna be in a chair or seat.
Then i went to a more minimalist set up, the Long Spur pack.   This is what I currently use but i still usually take that rig off most of the time so i can rotate in my position more easily if i need to twist to shoot a bird that comes in from an unexpected direction.  Even in a low camp chair i feel much more maneuverable with it off.
Since i take the thing off most of the time anyway, why not just go even more minimalist?  I did not know these turkey purse/bag things even existed until i saw this thread but i am going to try it.  Just ordered an Avian-X Turkey Sling Pack.  Will use that for the rest of this season.   Thanks for the education as always guys!