If there's time to swap lenses. Often there's not. And what if you've already done that?
Better to budget shots as action is building in order to have the frames when they are needed. If there's time, change a roll before it's finished. If there's just enough time to swap lenses, do that. I'm talking about the short time frame of fast action, fast motor drives.
36 shots at 8 FPS take 4.5 seconds. It's really easy to end up high and dry at the crucial moment.