I am VERY familiar with those "looks"... lol
My poor husband has to endure razzing as well. When people ask him what he gave his wife for Christmas, or her birthday, mother's day, etc., he has to try to explain to people why and what a self-tensioning line is, or a Weather Shield (or any other BP gear).
They give him a look like he must be the worst husband in the world (you didn't get her JEWELRY?!?!?!?)
Then, I have to explain how these things ARE my "TREASURES" !!
Of course, he gets the sympathetic looks then !!!!!!!!!!
It would be WONDERFUL to hang out with people who "understand" the passion...