I've vaporized some 4aco-DIPT which I ended up getting as a free base and it had minimal activity. Never tried it with any of the 4ACO salts but I doubt it would work well. Odd that psilocin would effectively vaporize and the 4aco not - I have some 4ho-DIPT HCl kicking around - maybe I'll try to make it into a free base and try that to see if it works, or even just vap the salt. If it has any activity when vaporized, the HCl should have some effect unlike the 4aco which had exactly none. I think it ended up vaping about 30-40 mg before giving up..