Well I can give you my experience when I was looking for my wing. There are available wings that you can dive doubles and singles that are advertised as such. However from what I gathered is that this wing isnt suitable for one or the other as much as a dedicated singles wing or a dedicated doubles wing. From the people that said they have bought them, they ended up getting a single wing or a double afterwards. There are a lot more divers with more experience that will be able to answer your question better, but I tried
I ended up getting a singles, and when I want to go to doubles all I need is the wing, and tanks, and manifold...ok I need a lot more