Immersion Research has this drysuit: http://www.immersionresearch.com/products/drysuit.html
Soliciting “personal experience” stories 
- how it wears, breaths, etc.
P.S. Yes, I do know that KoKoTat makes the most excellent drysuits. There also is a whole bunch of other manufacturers selling almost the most excellent drysuits.
peek around on boatertalk.com-i know a
bunch of White water boaters have it…
personally i love the fit and comfort of the Stohlquist bpod drysuits…
IR designs their gear for real active paddling…do not expect that the shoulders will hang up on you or any such nonsense like that…their tops have GREAT fit designed about them…
r