This is something I need to know. As for recently, wide grip, upright rows don't hurt my rc's, but lat raises cause discomfort / pain. Ergo, I've been doing upright rows for the last few weeks.
The main thing is to keep your elbows above the bar when doing upright rows. I see most people end up with their elbows below the bar and that is not working the muscles that you are trying to target.
And yes moving your grip outward does place different stress on the muscles.