At $400 to fill a twinset with 21/35, i would think that with regular T1 level dives, you would quickly make up the expense of a CCR.
My big question is about the learning curve required to become proficient enough to execute expedition level dives. Just going by IART's bare minimums, it's over 200 hours to progress from newbie to trimix/deco, and a huge chunk of the skills ingrained through don't transfer from OC to CC very readily..
For jebus sakes people, don't believe everything you hear on the internet (including this post I suppose). When I transitioned from doing T2/T3 level OC dives to CC I did about 40 dives getting used to the machine. After another 40-50 I was back doing the same exploratory trimix dives I had been doing on OC. IF YOU DON'T SUCK AS AN OC DIVER to begin with the learning curve isn't that big. It's really not that freaking hard to make the switch. The problem is that the agencies take on students for CC training that can't dive properly to begin with.
---------- Post added September 8th, 2013 at 08:51 PM ----------
Roughly guesstimating, how much of your diving would you say gets done with your KISS vs OC?
95 %. I dive CC unless I'm doing Mexico caves or single tank 80 stuff.