Anyone who signs is going to meet audism. Hearing people such as myself who sign find signing things like "Hello" "Nice to meet you" "Where?" "Coffee tea which?" almost automatic whether there are deaf people around or not.
Some people ignore it, some are interested, and some will tell you to "Knock it off."
Oddly some of the most insulted are deaf people who feel you are demeaning them by implying they have to lower themselves to the level of someone who has to use their hands to communicate.
The fact is that I am hearing and my ASL is far less than I would like it to be but spoken language alone is not natural to me and never has been. Without classifiers, placement, facial expression, body incorporation and a couple of morphemes I might as well be tied and gagged.