Well, my dad may just be a genius. He called me about these 'seasonal' items at Home Depot.
They come in eight different preset channels. At less than $10 each, I bought two of one channel. Unlike other whimpy ones I have passed on, these are good to a full 15 amps and are ruggedized for use outdoors. I'm not outdoors but my Gara . . . er, shop . . . is uninsulated on two walls.
I used to use a foot switch over by the DP to turn the vac on and off while hooked to the DP's DC hose. I swing this same vac hose over to my smaller BS for use over there. However . . . S.O.P. is for me to not move the foot switch and realize this only once I am in full position, holding my material on the small DP table ready to begin cutting and have no way to turn on the vac .
I still have to swing the hose but now have one remote at the DP:
And one at the BS (No, I'm not that lazy. The tarnished post to the left of the BS is a sanding-only DP, not the one with the other remote):
And I have a spare power unit in a drawer in case one dies after warranty . At this price I went ahead and grabbed one on a different channel for my shop made ambient cleaner. Now I can finally move it up where it should be instead of down where I can reach the power for it.