I've just found out about how to do stems when recording, and why they're important (kind of obvious, I guess!) The only thing I can't work out, is where "full-mix" reverb is applied. If I want a particular reverb for the whole mix, it needs to be on each of the stems which are then summed for the full mix, right? I have worked out that you can't use a single reverb, and send it back to the stems, as you'd end up with the reverb of all the tracks on all the stems. So presumably, you use identical reverbs for each stem, if you want the same effect as all the tracks having the same reverb.
But is this how multiple, identical reverbs work? If multiple tracks are sent to identical reverbs, and then summed, does this sound the same as sending all tracks to one reverb?