Psychedelic?... Yes
I haven't yet had a chance to try the more "classic" psychedelics such as LSD and psilocybin, my experience is more with med-high doses of ethnobotanical psychedelics such as Morning Glories, Cohoba snuff, HBWR, etc, also have some experience with the milder opiates + kratom and poppy pod/seed tea.
I've had some very intense experiences with high grade bud (and a nostalgically lower tolerance) which definitely have cosmetic similarities to phenethylamine/tryptamine chemicals. Thing is, though, the feeling is similar, and alot of the visual effects, especially CEV's, have something in common, but the mental effects (particularly the random free associations combined with the constant 8-20 sec. short term memory loss) is so iconic of pot that I don't think that they could be at all confused, unless you were working with threshold doses wherein effects haven't manifested completely.
[Just for reference, I had a few psychedelic experiences before I smoked pot, and almost every time smoking, I always get medium-strong CEV and often distinct OEV's auditory hallucinations (music or poetry in my head that i can simply start saying as though reading off a script), and so on. I've even been able to do thing like sit at a table with people talking around me, and make myself believe that the entire room is upside down so much so that I feel like all the blood is rushing to my head, and everything is hanging down from the ceiling, very realistic, and great fun on amtrak
]
Also, pot is nothing like opiates, even at the higher doses, the body high is very different, as is the mood effects. opiates sink you up to your ears in a subcutaneous jacuzzi and all your day to day concerns become less significant. With pot, I find that I can't really use it for escapism (and I try not to use most drugs for that reason anyway). With pot, you can feel like your floating, sinking, light, heavy, being contorted, stretching, etc, but it doesn't tickle the same contentment node as opiates, (although very pleasant, nonetheless)
I would smoke pot more for recreation or sociability w/ good friends, and use psychedelics more for introspection and as an occasional sanity-supplement to keep a healthy perspective. Pot is like tuning into the higher-consciousness information network without a relevancy filter, while psychedelics are more structured, more meaningful, and less cloudy and apathetic. Still, they all have their place.