Hi Sikael,
Most of our collaborations are the result of submissions. We get about 10 per month, sometimes more. Almost all of the collabs were from custom makers licensed to use our trademark. Custom makers are easier to work with because we like to show the models at selected shows for a while before making a decision, and custom guys can build a working model. We rarely go to a maker. We've gone to makers in the past (Bob Terzuola, Wayne Goddard, Michael Walker, Jess Horn, etc.) but we've also had makers turn us down and even be insulted that we would want to do that, so we have to be more cautious. Don't want to offend. Not everyone likes Spyderco.
sal