OMG..... Every single day at work. I work in healthcare.. we have Muslims of all medical disciplines working there. I have never had a problem with any of them. All were very personable and very nice... except some of the Docs who maintained the old "nurses are our handmaidens" mentality.. but that wasn't just the Muslims.. that was a lot of the older docs as that used to be the culture in healthcare.. The younger docs are not at all like that.
Maybe that's why I'm not as intimidated as they are not strange to me.. I've been around so many and worked side by side.. some are friendly, some are distant, some are capable, some aren't. They are just people IMO.