I really like this bag.
Your post gives me a chuckle because I just got finished sorting out that issue with Transpack this week. You have the Sidekick Pro II, not the Pro I. The Pro II is their newer and supposedly better bag. In my opinion it was decidedly worse! Much worse in fact, due to the change in the bag's boot securing system. In my opinion (one that I shared with Transpack), is that the new strap design is woefully inadequate. Regardless of of how tightly you cinch the straps, the boot cuffs splay outward and slide around a bit when you are walking. They ended up sending my a SK Pro I in exchange. Unfortunately, with the extra shipping charges I incurred sending my Pro II back to Transpack, my total cost for the Pro I that I now have was $120 for an item that is $80-$90 most places.
Anyone looking into purchasing this bag, I hope you see this post and can learn from my experience. The cliff's notes version of the story: Sidekick Pro I > Sidekick Pro II both in function and in price.
Been doing a fair amount of research and it sounds like this will be the backpack I buy. Quick question though - is it true that it includes "a hidden ski loop strap and top ski loop that allows you to carry your skis on this backpack as well?" It's in the description on skis.com below, but I can't seem to find mention of this feature anywhere on their site (http://transpack.net/bags.php?section_id=1&product_id=9).