DOM doesn't do it for me... but I absolutely adore DOC, and DOPr was amazing too but 40 hours is too long. All of the DOXs I've tried though (almost all of them) share similarities... and yeah, there is similarity to mescaline. I find them, in general, to be like a halfway point between LSD and mescaline, but different, too.
All of them cause vasoconstriction to some extent, some more than others. But it's pretty minor or even nonexistent until you push the dose higher. At normal recreational doses, it's not anything to worry about.
From memory, DOM seems to cause less vasoconstriction than the halogenated ones like DOC and DOB. Actually the alkyls in general (DOM/DOET/DOiP/DOPr), I didn't notice vasoconstriction like I do with DOC.