Shortest acting tryptamines

[Niteflights]

I was wondering what the consensus is on which of the tryptamines has the shortest acting duration. Specifically I mean the shortest duration of the orally active ones . I am not interested in the atom bomb freebase tryptamines such as 5meo-dmt (which only last minutes), but rather the longer acting orally active varieties (4ho-mipt, 5meo-dipt etc) which can be expected to provide a trip between 3-8 hours.

It seems from SWIMS experience that 4ho-dipt seems to be a candidate for shortest acting. Shulgin estimates its activity to last 2 - 3 hrs, I tend to say 3-4 hours. Opinions?

Cheers,
Niteflights