I think this paper is about N,N-DMT. 5-MeO is a different beast. Although I've run across N,N in vape pen form so this is still a relevant delivery mechanism.

In terms of ergonomics pens can't be beat, though if you'd rather go from 0 to escape velocity on a single hit, "the machine" is the way to go (https://wiki.dmt-nexus.me/The_Machine)