I don't have an E60, but I borrowed HankB's E50 last night. I had some left-over G70 User Programs and was able to use some of them, pluse all the styles from G70.
I took it to the job and used it all night.
I got nothing but WOW's from the audience.
They loved the sound. I wish it had a vocal processor/harmonizer and a few other things (such as break/fill, multipads, text file capability). It sounds great, is small and lightweight. Some of you wouldn't like the key feel, but it's perfect for me--light and responsive.
Just an experiment.
DonM