It sounds like the way forward is to do it both ways. I don't know how others go about it but the few videos I've done took me a long long time to edit. Maybe with practice that will come down a bit. I can do a photo SbS in an hour or two, a video takes me 12+ hours. I'll see what I can do.
"Political correctness is a doctrine, fostered by a delusional, illogical
minority, and rabidly promoted by an unscrupulous mainstream media, which
holds forth the proposition that it is entirely possible to pick up a ****
by the clean end"