Can I re-use a spirits measure cup for different spirits? I have a stainless steel jigger measuring cup for UK spirits measures, like this image:

The alcohol does not seem to 'stick' to the jig cup, so is it okay to use the cup to, say, measure a gin drink then re-use it for, say, a vodka drink, without rinsing the cup?
Or should I always wash or rinse the jig before re-use for either a different spirit or a different brand of the same spirit?
Should I have separate measuring cups for different spirits?
A purist would say always rinse.
A normal person would say don't worry about it.
A pragmatist would say measure the vodka before the gin and no one will be able to tell the difference.