I have the mini dup version of the Vega attached to my mini-Jet lathe. Have to remove the tool rest. I know others have the delta and can mount the dup on the back of the lathe (turn the cutter upside down). Not possible on the Jet. Set up time is pretty quick, though I leave mine set up all the time. I still have my Grizzly lathe and turn by hand on that one. Its probably a personal preference, but I find that I can knock out bodies faster with the dup than without. Depending on the plug, 12-15 bodies and hour, sanded and ready for drilling, and reaaaaal close in dimensions. I think it really depends on how many plugs you are making whether it is worth it or no. Though, if you want to go through that pile of wood that you posted in a weekend, the dup would be the way to go
Jigman