All the bike mechanics I've dealt with have been excited to work on my bents... I think it provides them something new and different from the usual stuff they work on everyday.
My favourite mech works with another reputable mech who has a reputation for fixing the unfixable, including bents.
The last time my trike was in the shop, my fav mech reportedly pointed it out to Mr Fix-All and said "see, I can work on recumbents too, except I work on high end stuff".
I LOLed