Yes, thank you. I have compared and to me they seem "suitable" but I can't say that I really, truly understand what makes something a suitable alternative. I never really fully understood why certain vegetables were restricted and others not, so I don't entirely trust my own judgment.
Since it seems that no one else has ever used them, they may not be.
After looking thru 3FC via "site:3fatchicks.com protizyme" (suggest you use this to search for things at 3FC rather than use their search feature since it never works for me) in my google search, I found one thread, although protizyme is not discussed, it seems to be okay for the most part since no one came in and rebutted.