I run coil rear on my dualies (ccdb coil and ohlins ttx22m) and a coil fork (cc helm) on my HT. Super impressed with the rear. So much support when bombing down descend yet still very poppy over jumps. The latter is only applicable to ccdb, the ohlins not so much, but most likely it's because of the overall frame designed more for super enduro/dh.
I like the cc helm. It's very plush, but I wouldn't say it's much much better than the air forks (rs lyrik) that I had on it before. However, I only had it for few weeks, ridden it at most 3 times. So need to spend more time tuning it better for final conclusion.