Gurdjieff is amazing, reading Beelzebub has changed my life, reinforced my critical outlook towards things, made me more curious about the "hidden misteries" of life and humanity's history.
It also made it even clearer to me how we're still not fully awake and there's a long way towards that, a lot of self-observation and use of different 'alarm clocks' are needed. In this sense, I think psychedelics are very compatible with the work proposed by gurdjieff, because at least for me they can serve to see different parts of myself, from another angle, and thus get a little bit closer from the elusive "total picture".
I wonder what gurdjieff would have thought of psychedelics....
Anyways, as Gowpen too, im not a strict follower of the fourth way or anybody's way except my own way, though I incorporate what I feel is beneficial for me from different life experiences and teachings I come across.