In projects I often use stretch markers while the musician(s) are fooling around/whatever to give them an idea of what the performance may sound like with a different feel. Often this means overdubbing parts.
The issue is that I prefer using different time/pitch modes for different tracks.
Current I use a workflow like this:
http://admiralbumblebee.com/music/20...in-Reaper.html and re-set the time/pitch mode after every track.
Is there any better workflow?