New to diving, been researching, and have had a lot of votes for a BP/W setup. It almost seems like everyone experienced just advocates to spring for this.
Yet the standard BC jacket is immensely popular.
Arguments AGAINST just getting set up in a BP/W from the get go? I'm a 31y/o male who doesn't mind things being a tad more complicated and plan to be a (relatively) active local diver (cold water, PNW) + tropical vacay diver.
I'm open to either. Unsure of future aspirations as I have yet to have much experience.
If you really look at it in the big picture then a BCD is a BCD is a BCD..... It has a function, and both a BP/W and a jacket will fulfill that function.
That said, for doubles you pretty much need a BP/W. Even jackets that claim to be able to support doubles do so very badly in my experience, so if using twins is an option for you for the future then it seems obvious to me what you should choose.
The main (perhaps only) disadvantage of a BP/W in my experience is travelling with it, but not for the reasons you might think. It's not because of the weight. The additional weight of a BP/W is only marginally important. It's because of accessories. A properly designed BP/W doesn't allow for integrated weights or pockets. You can add them but the only only ones I know of kind of suck. When I travel I often will make 20 or so dives in a week and believe me if you have all your weight on a weightbelt because your rig doesn't have pockets then by the third day you and your back are going to hate your rig.
Another minor PITA with travelling with a BP/W is that you may need to have a single tank adapter (STA) which adds to the weight. You may also need to have a smaller wing if your wing is used for doubles. The nice thing about a BP/W is that it's modular so it's not a problem but adding a bunch of options like a pocket, weight pockets, an STA an a smaller bladder can end up costing you more money than you might think. The BP/W crowd on the internet are so fanatical about it that they often overlook/ignore these kinds of things in their arguments about why a BP/W is a panacea for everything diving that ails you. In the real world, however, add up the costs because you'll need accessories and they aren't free.
Personally I have both a jacket and a BP/W and these days I only ever use the jacket for training. I can dive just fine in it but I like the BP/W better.
R..