Advantage: The steel is rust-resistant, easy to grind. Costs little.
Disadvantage: sliding discs made of plastic. Very thin Leiner (will certainly bend under heavy load). Something to mild steel for a folding knife and so little cutting properties. Weak construction.
Subjective evaluation:
Blade is stuck, no blade play, opens and closes perfectly.
Not quite symmetrical processing.
19.02.2013
Due to the narrow width and the sliding discs lateral blade performance was at a harder application during the move.
For 20 there are better knife, both the construction as well as from the steel forth Ganzo eg G704.