Very good thread.
I purchased an oxycheq bp/w set up based on comments from this board and after looking at it, it just made sense.
I too had a bit of a surprise when I tried to pool dive the set up. The owner/course director (not mentioning the agency) who belongs to an agency which promotes tech diving not only laughed at my configuatation, which was a perfect hogarthian system other than a slightly longer spg hose and no can light, and told me it was unsafe to dive and not nearly as well streamlined as a scubapro jacket. (guess what he carried in his store!) I was also surprised because I saw a BP with attached doubles displayed in his classroom.
After a lengthy conversation, he finally caved and charged me twice the usual pool rate. (found out after I used the pool) Some people feel a need to mock what they don't personally understand or consider optimum. (Recently found a new pool and shop, so far no problems.)
I live in Korea and here I may be the only one diving a BP/W. (I have never seen another one here) Most people are curious about the set up and do nothing more than point or ask what it is. This perhaps is not due to the gear. It tends to be the norm for people to point and question in remote areas where there are no foreigners.
Bottom line for me. I'll dive what I want and what I'm comfortable with. If others don't like it they don't have to partner with me. So far I have never had someone refuse to partner with me so, it probably isn't a big issue anyway.