Yes, I have one. I *think* it's the predecessor to the 35l rucksack.
Pros:
- CHEAP. Got mine for $5. A Google search on "Swedish rucksack" turned up several vendors.
- It's sturdy and will probably outlive me.
- Decent capacity; it will carry enough for a weekend outing.
Cons:
- HEAVY.
- Leather shoulder straps (not my preference).
- Seems to be designed for someone a little smaller than I am; I had to fiddle with it a lot to get any kind of reasonable fit. (I'm 6 feet 180#, not Andre the Giant by any means.)
- The straps have extensions which appear to be designed to hook onto web gear. If you don't use web gear these can flap around and strike you in the face (don't ask me how I know!!)
This link describes a modification for the straps:
http://www.alpharubicon.com/leo/swrsc.htm
One of these days I might try it.
I keep mine in the vehicle for storage of emergency gear. Wouldn't want to carry it too far, but could carry it in a pinch. For $5 that's OK. The newer 35l rucksack looks like a better idea for backpacking IMHO.
HTH, cheers