I dive for work and recreationally.
When I dive for work I'm in a drysuit, a lot of exposure protection under the drysuit, on surface suppy air, am either in an AGA or commercial diving helmet, carry at least 35 pounds of lead, an AL80 as a pony, and at least 20-30 pounds of additional gear and tools, am intentionally very overweighted, and work in the muck at the bottom digging and moving heavy objects around. Its so much gear its unsafe to walk to the water's edge without significant assistance.
A rear inflation with a lot of lift is the right choice in these circumstances.
When I dive recreationally, I carry (compared to work) very little gear, dive a 3 mm shorty or 5 mm wetsuit have my bouynacy set up as perfectly as I can, and I am very conscious of my bouyancy and the effect of my breath control on my bouynacy. I prefer a jacket BC for recreational diving (I've used both). As long as I am properly weighted, in a thin wetsuit, and carrying typical recreational gear (i.e. very little) the BC style, once underwater, is irrelevant. I have to add so little air to the BC that it just doesn't seem to make any difference, and the jacket style is just way more comfortable and functional on the surface, and when diving recreationally you spend plenty of time hanging around on the surface.
To me, the advantages of a back inflation underwater when diving in warm water (i.e. with a thin wetsuit) are minimal. With more exposure protection (and thus the need for more weight and more air in the BC once under) I would go to a rear inflation, but I just don't dive in cold water recreationally.