LF lenses don't suffer from the same distortions as most 35mm and MF wide angles because they are purer designs. Wide angle lenses for SLPs are a compromise as they have to be retrofucus to allow room for the mirror, lenses for rangefinder cameras are generally much better.

The best examples of this are the Hasselblad SWC which has a far better lens than the equivalent Zeiss lens for the normal Hasselblads.

I use 90mm, 75mm and 65mm lenses and all have their place, used well and people don't realise you've even used a wide angle lens.

Ian