Let's compare cars to knives!
OK, let's not. I hope knives don't flame out the way the auto makers have. Maybe their business model isn't such a good idea to emulate. In any case, concept cars are never meant to be built, they aren't test beds as much as advertising for certain elements that may be integrated into later models.
The Spyderco knives at Blade are going to be built, but with changes based in part on handling. Over-publicizing through a partially successful medium like internet pictures is just not helpful, from their own experience. Too many questions about elements that the actual handling may have already eliminated.
Not the same at all as buying online. By the time they hit the internet stores, you can see many pictures, read reviews here, ask the reviewers questions. Spyderco is not looking for months of desultory comments on a model they can refine in a couple of days on hands-on feedback.