I shoot the V system with a P20 back. Lenses are all CF no C and some CFi and CFE. I also am starting to shoot the same glass on the H with a P45 back and the CF adapter. I have only shot the lenses I know are good up to now, busy holiday period, but the 40mm CF FLE 40mm 120mm makro 100mm and 180mm perform up to expectations, I can't see them suddenly falling apart for those extra pixels. It depends on what you are shooting of course but the 80mm HC and 1.7 converter make a handy pair that nails focus reliably, the arrow manual focus is good but I prefer to study the subject not constantly look at arrows off tripod. Given the issues, mainly mirror slap handheld I found with the V, I had no hesitation putting the P45 on a H body instead, the H1 can be obtained cheaply and serviced to current standards by Hasselblad for not much money. The CF adapter is very workable I find. I understand the emotional attachment to the V though, mine was bought new in 1982 and I would not sell it, but the glass holds up better than the bodies. I suspect you may get more of a "look" with the C series rather than technical perfection. Given the price I am tempted to try one to see.
If you are looking at the rather large crop of the CMOS back I think the lenses would be fine, it's the body I would worry about, if you are putting it on a V.
