I do not use hassy lenses, I have an M645 set.
Regarding the hassy ones — I know some people who use 150/4 as a portrait lens instead of a mamiya one. They say, that it is indecently to compare them, they keep mamiya lenses on the shelf and zeiss under the pillow). But I have not seen good examples and comparisons... Especially I would like to get a comparison between hasselblad 150, mamiya 150 and CZJ 180 (penta6), as I am considering to get the last one.