For sale is an elusive Cilo Gear ski pack. This is very similar to a 30L worksack with a few upgrades: 

Hip belt has a zippered pouch

permanent, reinforced ski straps on lower for A-frame carry

internal snow tool pocket against the back. This is much like a hydration bladder sleeve and makes the pack ski much better as the snow safety gear is tight against the back. 

The bottom material on the pack is more durable than a normal worksack (not sure how it compares to the guide service) 

the 34L comes from a bit more "girth" for puffy jackets

Also have an external shovel pouch from Cilo. 

As you can see, has all other normal Cilo features - ice tool carry, straps, kangaroo pocket

in Excellent shape. Retail value of pack is $259 and the pouch is $55. $220 shipped lower 48