My everyday carry is a Leatherman Charge Ti which gets used 3 to 10 times every day.

The backup in my pocket is a Chris Reeve small Sebenza, which seldom gets used, but when it is needed, it works great.

Both of the above are legal in San Francisco, Oakland, and Modesto; which have restrictive knife laws.

Whenever I go out on the trail, I also carry a BK77, 7" fixed blade, which always seems to get used daily. I have used this to start help build a fire after an un-expected dunking in cold weather.