He sounds like an honest Injun:
"This wand have 2 vacuum head
14" wide 4 jet
2 wheel
2" Titanium Tube great for Truck mount
Make job much easier
Look like Zipper wand "
For starters I would be a bit concerned with the placement of the jets. That's without commenting that it looks like something a special ED shop class created.
it would work at low PSI....2-250..300 tops
the real issue would be keeping both vac slots on the carpet .
a proper wand head position at all times would be critical or it would be a carpet soaker
Looks like a dumb design... I'd take the wheels off, angle the jets to the front some more, have a Y off the top of the wand head instead of running through one another, put some glides on it, and Bam! Minus well get a Zipper and save the headache unless you like to tinker....
Seriously though, with the wheels in Eric V. pics, it looks to be a teder toder type of technique to use it Imho.