That's probably what I'll end up doing most of the time, drjenkins.
I did notice from downloading samples that in at least one case the Kindle version was formatted better (Jeffrey Eugenides's "Middlesex"). By default the epub version has space between each paragraph instead of indented first lines. While that's easily fixable, the Kindle also preserves the spaces between different sections of a chapter that the print book has and the epub version doesn't, and there's no easy way to add them.