Quote: (Originally Posted by
colinicky)

Obvious reason that comes to mind is diving a wet suit so twin bladder gives you a second buoyancy without deploying smb/lift bag plus it gives you 2 inflators to pull out of the wings before you are really in the SH**

I count my CL as a second buoyancy device
I had a OMS dual bladder wing, - but never used the second bladder. I sold it to get a Dive Rite super one with one bladder
Nick