Here are my adventures in making a cold smoker.
I use an old bullet smoker as my cold smoker, so not much bigger than a 57cm kettle. The venturi type that I originally made either produced way too much smoke for my smoker and made everything really acrid or went out Also it did mean I had to learn how to solder copper plumbing fittings, but tbh it was pretty easy with the help of YouTube and a 20p blowtorch from a car boot sale.
The soldering iron smoker just didn't really work well with my chips, as after a while it all got damp but it might work fine with the ProQ dust as I would imagine that is pretty dry.
The hybrid smoker did seem to work quite well producing a thin stream of smoke for a long period of time, but tbh I would imagine a ProQ would work just as well and be a lot less effort.
IMO, from Wade's video, the AMNPS looks like it produces too much smoke for my needs, but is great for filling larger spaces with smoke.