This is an interesting thread and a very good point when it comes to this hobby. When I first started getting into knives and asked my buddy for a recommendation and how to choose a knife, his advice was very simple - just try it out and make sure it feels good in your hand. It wasn't about what looked cool, it was about what worked. And this is where Spyderco excels. Their designs are primarily meant to work first and foremost, and form follows function. I have been learning much more lately and what has been helping me is to actually get the knife in hand to really experience the design; doing so has really helped me appreciate many designs that I had previously dismissed or glossed over.
Sal makes a great point that one can experience the knife, but the concept and design are separate. There have been times where I have loved designs from some companies but the execution just fell short; this left me disappointed with the individual knife specimen, but did not affect my appreciation for the design itself. Luckily, from what I've seen so far, Spyderco doesn't disappoint on execution so that I can appreciate the design to its fullest when I use a Spyderco.