Those are bungeed wings of controversy (as Aquatec calls them). Anyway, since I have a little more time now...here's my take on it.
You can get whatever wing you want and implement an OMS/DiveRite style solution. There is no reason you couldn't use a 40#, 45#, or 55# Halcyon Explorer wing and do the same thing. You could bolt the wing on your BP, use an STA, and attach the tank(s) the same way as with the OMS or DiveRite setups. Halcyon recommends you use the "correct" wing for the job and get two wings (one for singles and one for doubles). The reasoning here, I think, is pretty solid. The smaller Pioneers (18#, 27#, and 36#) are ideal for singles, have a nice "donut" shaped bladder, and do not have too much material when mated with singles. I think with any doubles wing, be it OMS, DiveRite, or Halcyon, you will have a lot of wing "hanging around" if you use it with singles. That being said, you could definitely pull it off...I see people on boats all the time that do the first dive of the day in doubles and then switch to a large single and an STA for their second dive.