I don't think there is any reason why a new diver shouldn't consider a back-inflate BC. The only thing I think a new diver should avoid is anything that is excessively complicated or cumbersome to use (and I put the i3 BCs in that class).
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I don't think there is any reason why a new diver shouldn't consider a back-inflate BC. The only thing I think a new diver should avoid is anything that is excessively complicated or cumbersome to use (and I put the i3 BCs in that class).
If your BC (either type) fits you in warm water wearing a thin suit or none, then it will need considerable adjustment to enlarge it to accommodate a thick wetsuit or a drysuit in cold water. A well thought-out harness carrying a wing can probably be adjusted to suit both circumstances; a wrap-around probably can't and you'll need another one. If you're wearing a drysuit the last thing you want is a wrap-around BC constricting your breathing.
My jacket BC fist just fine in a t-shirt, 3 mil, 7 mil, 7 mil farmer john, and drysuit with undergarments for 38 F water to 70 F water. No "considerable adjustments" are needed. I can definitely say that my jacket is my preferred BC in a drysuit due to fit. Since the amount of air needed to offset the squeeze provides enough bouyancy, I don't understand the breathing restriction comment