The mean
bioavailability of
tramadol after a single oral dose is around 68% and increased to above 90% after multiple doses
www.ncbi.nlm.nih.gov
it is pretty good and I guess that the ratio of tramadol to O-DSMT changes when the ROA is changed, which might or might not be what you want.
Never heard about anyone snorting tramadol, there might be some more reasons for it I don't know, but at least for those reasons there does not seem to be a reason for it. Maybe it is not even crossing through nostrils membranes, like most benzos do not.