Let's see: tripod gets used for several things. Tilt-shift work. Detail work. Anything where I want repeatability. HDR. "Non-mobile" work with a super-telephoto and a gimbal head. A tiny bit of "studio" type work. Blurred waterfalls.

I have the (convenience+cost) of a wife who also shoots. We tend to collect "two of everything", but there's often a his and a hers (as you'd expect: mine is heavier but rated higher, hers is often lighter but rated less, etc.). We've now got two CF tripods (Manfrotto four-section with center post and flip locks, RRS four-section with leveling base and screw locks), two CF monopods (RRS 4-section and RRS 5-section, both screw lock), a Markins ballhead, a Wimberley head, and two RRS monopod heads. Now that I have the leveling base, and since the monopods are screw lock, I'm a lot quicker with the screw locks: extend two sections all the way, extend one leg further if needed, "toss" it in place, then level the base and I'm good to go. If I want to fiddle with the height, I can loosen a screw lock enough to slide it down a tiny bit, then tighten: can't do that easily with a flip lock.

Still, I'd say tripod use is <2% overall, though it may have been 10% or 15% on our recent cruise (in part due to the rental of the 600/4).