I've got a 0560 too. I love that knife but it is a little large to carry everyday for me. Mostly it's the thickness, because I'll carry my Endura sometimes and they're about the same length.
90% of the time I just don't need a huge blade, just a sharp tip does fine. But the 350 for me is a perfect size, not too big, but big enough so it has great ergos and is solid as a rock.
You'll cap the value a bit if it's not mint, but since the knife is a rare sprint it'll hold its value either way, and as time goes by the value may even go up. And to someone who really want's it, it's hard to say what they'll go for. I like to buy knives mint, but I've gotten over my fear of not wanting to use rare editions IF there is a performance gain. I'll use my TiZDP leek since it has a killer steel and handle material, but my Black Pearl inlay leek offers no benefit's other than aesthetics. So there is no reason to use it, and it remains mint in box. Sometimes I'll look to buy rare used sprints with exotic steels because I want that performance gain. I like to collect steels rather than own every variant of a specific model. In fact just today I got a CTS-XHP Manix 2 user(my first Manix 2) in the mail, and since it's already not mint, I have no hesitations about putting it straight into my pocket as I walk out the door.