Hopefully I'm not intruding on a "mix it yourself only" thread...

I'm about to start testing Foma on canvas; the Foma folks are usually pretty helpful with questions, but I seem to have stumped them...

I'm wondering about priming canvas for Foma... good quality artist's Gesso (most of which is latex based these days)? Oil? Oil-Alkyd?

I ask because Liquid Light docs are pretty specific regarding oil vs. latex. Foma's docs mention something epoxy based, but just as a general base for absorbent surfaces.

I can test several things, but that will show me short-term results, concerned with longevity.