I have used it and it is something I found astonishing. The first time, it occurred so quick, i barely was able to remember what I saw.
The 2nd time I tried it, was in the middle of a magic mushroom experience. By doing that, I was able to stretch the DMT journey out in both length and strength.
Many of my friends and I feel that DMT tends to produce kaleidoscopic flowering dimensional portals and access to knowledge/observation libraries in either in the human mind or the collective unconsciousness, and the 5-MEO-DMT has the possibility to open up an alien /angel / being / inner-self contact.
For DMT to work well, it should be inhaled rapidly in the beginning, which opens the window, so to speak.