Benefits to using a water pan in the kettle?

I know it does help regulate temps, but does it actually make the meat more moist or not?

I had it in and took the water out mid cook b/c I didn't like the crust, but I'm wondering about the mousture level of the meat.

Side note- I'm using my brothers one touch silver. I don't like that it doesn't have an ash pan, but I do like how I can see how open the vent is under the grill if I get on my hands and knees.