I lost a client over trying to utilize this "solution". Really, if this is the best e-commerce solution for Joomla, I'm afraid the future of Joomla is dim. The whole back-end interface is clunky and adjusting the templates is a nightmare. The store MUST look good to encourage people to trust the site but it's like pulling teeth to get there. I'm sorry but in evaluating both the front-end and the back-end, I really cannot think of one good thing to say.
"adjusting the templates is a nightmare"
Maybe for non joomla templaters.