Saw a singer-guitarist on Mackinac Island last spring using a Boss RC-20 sampler loop station. It was amazing how he could jump between sections of a song and play rhythm at times and lead at others. I see Boss has a larger and smaller edition of that loop station. They have also reissued the Space Echo (RE-20). I think this would be a useful effect for OMB, just can't quite figure out how to use it.