Makers should test there own knives.
Ive learned over time to test EVERY knife that i make now (used to test only about 1 in 4).
From a collectors stand point i would not consider buying a knife from a maker that didnt test there knives, and make performance knives to some degree. I would at least, even on a "art" knife, want to know the heat treat, blade geometry and ergonomics were there... if not it becomes something other than a knife IMO.