It's kind of hard to explain but my 32 talas ctd evolution doesn't seem flowy and doesn't look satisfying when it compresses. It feels a bit stiff even though I have 25 percent sag.
Only by buying a new CSU, which is not cheap. The performance gains from the kashima coating are going to be negligible compared to what upgrading the damper will get you.
If you're getting the damper upgrade, it's worth checking the cost of the air spring upgrade also, better to spend your money there than for the kashima uppers.