DSLR MLU in Live View?

Yes, I am one of the small number of photographers who use Live View extensively. There isn't much choice since I use a Sony R1 for much of my photography, but for most of the shots I take live view makes sense: static landscape or still life shots, on a tripod, no mirror movement to worry about. Unfortunately, my R1 is getting old (flakey control wheel) and the DR is not great. I would like to move to a DSLR that has a good live view implementation (if I can find one). Nikon was my first choice, but I have now discovered that Nikon cameras move the mirror when photographing in live view mode. I understand that on some cameras the mirror and shutter mechanisms are linked, but apparently even on Nikon models that can do proper MLU the mirror moves in live view. This makes no sense to me, but that's the way it is (also Nikon does not offer a live histogram in live view for anything other than their top pro models which is another negative).

So, my question is: does any DSLR keep the mirror locked up in live view mode?

Cheers, Keith
http://www.kotay.net/keith/photo/photo.shtml