This looks interesting, but I'm afraid it might look like a fanny pack. Better that than a murse I guess. http://www.cocooninnovations.com/product_info.php?cat_id=49&product_id=192 More expensive than the Gramercy Messenger Sling that has the same Grid-It System. http://www.cocooninnovations.com/product_info.php?cat_id=62&product_id=194
Here's my review. Both the Gramercy and Harlem slings are well made and if you need a case for bicycling/etc., the $55 Harlem is comfortable and a nice case. For just carrying an iPad, I'm going with the $30 Gramercy. http://www.iphonelife.com/blog/2458/protect-your-shiny-new-ipad-and-iphone-cocoon
I really wish there were more pics of the sling, preferably non-stock pics. I'm curious about how adjustable the strap length is and would like to see more pic of the interior. Also, all bags should have a pic of someone wearing the product, i don't know why we don't see this more.