If you have a choice as to where to call a show, consider how well you’ll be able to hear it, as well as the visibility and other issues.
The only professional production I called from backstage was for a one-shot special event performance, with a few hours of rehearsal during the afternoon, during which I worked at a tech table in the house. At the show that evening, I discovered that while the visual monitors were adequate, there weren’t any monitors for sound, and the heavy masking and curtain meant the speeches between performances (which I needed to Q off of) were barely audible from my position, even though the hosts were mic’ed and maybe 10 feet away from me.
You can have problems the other way, too. I began an opening night performance without booth monitors working, and had to dash across the booth with my book to call the Q-heavy first scene leaning over the board op.’s shoulder, straining to hear the actors through an open window to the house.
Overall I prefer to call from the booth, where I can take in the big picture, but I’ve only had a choice about it on one occasion.