have you ever felt that 2 knives complement each other in a perfect manner and just feel the need to carry both? i edc both a spyderco military and a benchmade 520 and i wouldn't remove either of them from my current edc setup, because they are so different that you could choose each time the right tool for the job:
- robust tip vs. needle-like tip
- axis vs. liner
- thumbstud vs. spyderhole
- no choil vs. choil
- aluminum vs. G10
- tip down vs. tip up
- thumb ramp on the handle vs. -//- on the blade
- etc, etc

i would be interested in finding out more about the combinations that you use and the reasons that have made you choose them in the first place....
- robust tip vs. needle-like tip
- axis vs. liner
- thumbstud vs. spyderhole
- no choil vs. choil
- aluminum vs. G10
- tip down vs. tip up
- thumb ramp on the handle vs. -//- on the blade
- etc, etc

i would be interested in finding out more about the combinations that you use and the reasons that have made you choose them in the first place....