Pretty neat I didn't know Prolux made a water vacuum, but I wouldn't recommend one. Rainbow vacuums and other water vacuums are a lot of extra work. You take a canister and add an extra gallon of water to pull around, then you need to empty and clean and dry the bowl when you are done, and you need to periodically clean the separator so it doesn't grow mold. It's a canister vacuum with extra weight and extra steps.

Unfortunately I can't think of a perfect solution. A Oreck Orbibtal would be better at scrubbing. A canister steam mop from Dupray or McCulloch would have hotter and better steam.