shoot on Pana900 and B roll with HVX?

[SquidLips]

Could one shoot, say, 80 to 90 percent of a feature on the high end HD cameras (the 900 or varicam) at 24P and then intercut footage from the HVX without drastic change in the look? Or is it akin to shooting on 35mm and shooting B roll on 16mm? I have a low budget feature in March, and was wondering if I could get away with several days of 2nd unit on the HVX if I shoot the rest on the upper end cameras.

I will also be using very long film lenses so will probably need the mini35mm adaptor on the HVX.