Looks like a zombie thread from the dead, but while we're at it, I've been working with fresh caapi leaf a fair bit lately and I think it's waaaaay under-rated. I can't figure out why people relegate caapi leaf to changa - it's good for microdosing (just need to steep it in hot water with a squeeze of lemon) or as a proper aya RIMA in the right quantities. The leaf is super fast to grow/replenish and sustainable, and seems to be reasonably potent on younger plants too. I don't think it tastes as bad as the woody vine, IME.
My next project is psilohuasca using fresh pan cyans and fresh caapi leaf. I have a theory that this combo will be something special for several reasons (not just the potency but also the higher ratio of psilocin to psilocybin, and reduced/no nausea depending on how one treats the pans). Gotta be super careful though - pans reportedly containing serotonin.