Turbos are the future. For what a procharger costs you can build a nice turbo system. No belts to worry about or huge mounting system.
IDK about the tube being the do all be all end all. If you google it, you can find Daddy Daves dyno test of his new Procharged engine. I forget what it made for power but it is impressive.
And IIRC, it was on a 750 carb. I could be wrong on that, but that's what I recall.
Can't wait to see it run, and since I don't sniff the air for every fart the SO guys do, DD may have already made some passes with it.
