I shopped a restaurant for NSS (for years), and was asked to do same shop for another MSC. The reason I didn't
do it was NSS could be done by one, the other only by two. I think my buddy SandyF did it for both, so, i don't see why not...not the same day. MSC's know others have same jobs, Years ago I do think I did those upscale retail for a couple different companies, but didn't make a habit of it. You could check with Scheduler, but I doubt if they know. Many companies do Best Buy, so why not....it is a good question without a clear answer.
Live consciously....