The idea of using email as username and saving the user of filling out an extra field is first of all just great. I bought the bronze membership and installed the template right away in virtuemart 1.1.7. Unfortunately there was a template problem. I posted the problem in the forum and within just a couple of hours I got a reply and a solution. Unfortunately it didn't work and I then emailed my template and they got it working right away.
Great component and if you run into trouble they got an amazing and fast support