showing different size thumbnails in grid view

We are considering Grid View pro for our site. We already have a grid view in the Gold Cart in wp-ecommerce. We are selling antique maps, and while most of our images fit well in our landscape-shaped default thumbnail size, there are some maps that are set up as portrait-shaped. Would this plugin allow a product to be shown in its entirety even if it is shaped differently than the default?

http://wordpress.org/plugins/wp-e-commerce-grid-view/