In addition to my Leatherman I carry:
Right front pocket - Kershaw Leek (used the most)
Left Front pocket - Cold Steel Tuff-Lite attached to Streamlight Key-Mate (for political correctness around those with knife phobias)
Waist band - Cold Steel Voyager XL (for bad social situations)

I used to only carry one knife, a Buck 110 in a case on my belt. However, chance placed me a situation where my right hand was pinned and my left could not extract the Buck from the case on my right hip. Any knife would have gotten me out of the problem. Since then I always carry a minimum of two knives on opposite sides of my body.