I am on a plane to Svalbard, Norway and thought I would report some more of my ride evaluation thoughts.
The air intake on the Proclimb is very effective in deep powder snow. I certainly had occasion to test this as for two weeks I floundered around in over the hood snow. My conclusion is that by pulling air from the higher portion of the cowling is as good as it gets. The original design pulled air from the console in front of the handle bars in such a manner that air fed downward through a finely messed screen. This allowed snow to sit on the screen and restrict the air flow. The final design uses this besides adding intake screening underneath the plenum, this improvement allows the snow to fall away and air flow is no longer restricted. This design allows as well for the operator to easily brush the snow off the top screen as he is riding.