Oh yeah, going to start with one and see how it goes. If the Sericol RFUs are what we go with, it may work out. We'll simply keep the canisters topped off fully and spritz some distilled water in there regularly. For PCs it would likely be problematic although, if the nozzles can let WFX plastisol PCs pass through I'll most definitely use them for those.
That is ominous to hear that the paint mfg's are having a hard time keeping nozzles clean with WB though. My thoughts were that if the nozzle keeps the ink from dripping it should be stopping air from getting in but maybe not. Also, I'd imagine a lot of the paint dispensers are being run by Lowes or Home Depot employees and the like who may not be paying attention to the upkeep of them, I might not be so inclined to make the extra effort if I was working for a box store.
I'm going to give it a solid try since we have the one in the pic and also a dandy set of them on a carousel dispenser. If it fails we'll have to settle for squirt bottles and lots of shaking I suppose.