Good day, my friend.
I will generally only obtain knives from other manufacturers if Spyderco does not manufacture an equivalent. Contrary what one might think, it is not due to mindless, obsessive brand loyalty but due instead to my view of Spyderco as having the absolute best value for the money on the market. Why p*ss away too much money for lesser quality?
I have a couple of SAKs, and a Microtech Hawk Auto. I have an MOD Casillas Ladyhawk en route and might eventualy pick up the MOD Caracara. I will likewise hopefully obtain a byrd Crossbill soon. I have a few nondescript hawkbills (Boker, Klein, etc.) and gifted a close friend my Case equlivalent (forum member Barrabas on this board, if you are wondering ). As soon as the Tasman is available I will have one in PE (probably a matching set in PE/SE). I also intend to obtain a CF Harpy PE if possible, finances permitting, which is VERY up in the air right now.
So no, I don't consider it a bad habit to occasionally obtain knives from other manufacturers. After all, you have to have a basis for comparison to see just how wonderful Spyderco knives really are...
"I have followed with enthusiasm the course of your disgrace and public shaming. My own never bothered me except for the inconvenience of being incarcerated, but you may lack perspective."