Did a pool dive with a BP/W yesterday. I was working with a great guy who worked on my reviews for my OW dive in two weeks.after about two hours in a highly used rental jacket from the dive shop, he let me use his BP/W.
I found things I liked, like not having a chest crush from the jacket. Floating was a little difficult. Being used to the jacket's float profile, it was a little hard facing more forward. Having said that, I expected the back only wings would be like having a dingy on my back...it wasn't that bad.
I liked the BP/W's front side. having to deal with just straps and not inflation pockets with straps on them meant that I strapped in and did not need to adjust much after inflating. It might have been the design of this BP/W, but I found it harder to deflate the air.
Going horizontal was much easier with the BP/W, but the jacket made vertical much easier.
Once I put the BP/W, I added 6" to little Sensei, but it went back to normal when I took it off. But, that might be because I put the weight belt on wrong.