Has anyone figured out how to carry skis diagonally on the 30l worksack? I have tried using the included straps to rig something up, but have been unsuccessful. Any advice would be appreciated.

Maybe you need this?

http://www.cilogear.com/pouch.html

The description indicates that it is designed for snowboards. Has anyone used it with skis?

This is a pretty old thread, but I just rigged up my Cilo 60L for a diagonal ski carry recently for a long hiking approach. I took some 6 mil cord threaded it through one of the icetool pick sleeves on the bottom and closed it with a double fisherman's not. I now had a loop that was adjustable and was supported by this fairly substantial structural component of the pack. I slid my skis (base-to-base) into this loop until they got hung up on the bindings. For the top I took a Cilo medium strap through two d-clips diagonal from the lower loop and cinched down the skis about the neck above the bindings. Solid, well supported and high on my back without even coming close to bumping my head.