I recently purchased this component and i was expected more from this company. When installing the component everything was fine until you activate! The configuration completely changed my store in the checkout process skipped the step 2 (shipping) to 4 (confirmation), that is the most important step (payment) is not showing on my e-store with Virtuemart. I lost a lot of money thanks to the installation of this component. You ask for support and no one answers my posts, to be a customer who paid for the extension have a bad customer support, I am really disappointed ...
it was confirmed - in collaboration with the user - that this problem was not caused by JoomSEF, neither by original VM extension, but due to a usage of 3rd party (unrecommended) VM extension for JoomSEF, not working properly. So it has in fact nothing to do with JoomSEF.
(ad support and response time - it was about 48hrs - during the weekend!)