I used CK under BRHG all summer with good results. I thought I would try something different since we have had a string of cooler days here. I used it under PMSF and it turned out great! Very light, but plenty of hold. I just used more than my normal pool of CK and the foam. I posted a pic of my results in my Fotki.
2b/3a-ish at times
PW hair

Currently using
Jessicurl HCC
AG Liquid Effects