I have visited clients at their work place for an appointment. It was a rare request and I did accomodate a few clients this way. I remember seeing one man at clothing store before opening hours, not sure if he was the owner or manager. Another I visited at his restaurant after hours.
Yep, the clothing store was on Ste-Catherine, I wouldn't be surprised if it was the same guy! It's not like it's a common request.
Wether or not the client should be doing this, I didn't really care. I only accomodated those who I felt comfortable enough to do this type of thing with. In all cases, it was always a quicky appointment in these scenarios, as longer or more elaborate sessions would definitely be riskier.