[Paddlewise] Inflatable PFDs anyone?

Anyone have experience or thoughts on the use of inflatable PFDs, e.g.
SOSpenders, Mustang Survival, etc. for paddling?  Seems they'd be much more
comfortable than a conventional PFD and they provide much more buoyancy, but
they might make getting back in the boat more difficult.  Also, they come in
manual models that require a tug on a rip cord to inflate and automatics
that inflate as soon as they are submerged.  I can think of pros and cons
for each.

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