I combine maoi from caapi tea with ALL my psychoactive but I don't dose heavy. I agree there is always a carried risk with maoi however with DIET specifically I've never noticed issues with hypertension and such. This study might be outdated but a link RIMA: a safe concept in the treatment of depression with moclobemide - PubMed Moclobemide: therapeutic use and clinical studies - PubMed

With mescaline I'll be increasing dosage a little at a time but felt amazing at 50mg and the 'other salts' at 100mg causes 16+ hours of extremely clean energy. I don't suggest anyone else do anything but for those interested I always tell them to start very low since the potency increase is quite strong... for me around 3x. I reattempted these doses a few times to make sure not psychological. I don't get 'other flavor' but again I take caapi daily. I do 'feel' a slight uplift but unless taking around 600+mg harmalas I don't get anything else. High doses cause nausea and auditory humming and time distortions alone and would only take if I want a very deep aya experience.

Like I mentioned I don't mix things like Tramadol or 'diet stimulants' within a 4h window of taking the caapi but I have drunken red wine and drank beer 2-3h after dose. I've eaten shrimp and other things said to be bad without issues. I've taken kratom (only take 1-3 leaves for energy) without any issues. I am not suggesting everyone do it and start low to test.

There is no need to mix the two but considering I hold caapi in high regards I prefer to lower other plants rather than not mix.