That clutch is the best thing going. Better than anything makeshift, and better than the Davis. I used the clutch on a Precision 23. What's great about the clutch, is that when you engage it, it stays engaged and doesn't slip. Solid. And when you want to dis-engage it, all it takes is a little flip with your little finger.
When you're single-handing in a lively boat, fractions of a second can count. You don't want to be messing around turning the tension wheel on a Davis. That's almost a two-handed operation. The clutch is one hand. Instant and reliable.
It's been several years since I sailed my Precision 23, but as I recall, if I was sailing the boat, the line was taut and the clutch was ready for use. Nor do I recollect how I rigged the line. I can imagine a cam cleat on one end could be useful. When not sailing, certainly it would be nice to have the line completely out of the way.
Did I mention that I like the clutch?