Will Shops Get Pissy At Me?

No, im not brining it to a dealer. Just a local mechanic. When i first got the car my oil pressure sending unit went bad and had to get it replaced. Brought it there and he seemed on the up and up and did the work at a fair price. I just hope i can trust them to do my T belt. He commented when i picked it up if i knew when the Tbelt had been changed last, but i didnt. The guy i bought it from said it had gotten a new turbo just a bit ago and the belt looked new, so i decided just to wait tell the end of winter.