I'm not quite getting how this would work by your explanation? Perhaps a drawing? Guttering for blades may work if they aren't too long. You're likely to run into a lack of rigidity if the span gets too long. That said... try it out, you never know!
I think I can picture this in my head. Looks like an interesting, well balanced design, if it matches that picture in my head. Slanted blades attached to a round barrel, which turns on standard bearings or magnetic bearings on a fixed pole? Length of blades attach to length of barrel? Width of blades determine the surface area of caught wind outside the barrel, sort of like a paddlewheel on one of those old river steam boats built around a barrel and turned vertical?
As long as the long blades are properly spaced and angled, it should work well. The bigger around the barrel, the more power generated?