mine has only nipped me once, but that may be because i never hold him. if i did, he'd be gone in a few seconds!

cleaning the tank is tricky, and he actively looks or escape opportunities. i manage it by using a small rubbermaid container and trap him on the wall, then slide the lid (with holes in the top) on and press it in place. i then set him down on a desk out of the sun and clean the tank. when I'm done i just put the rubbermaid in, open it, and wait until he is sleeping on the underside of a branch, then i remove the rubbermaid.
I've had him for about two years in a ten gallon with a wire/mesh extension on the top. in the summer i dont use any heating, as the tank is upstairs and we live in Texas. in the winter, i use a zoo med 25 watt basking lamp, so the tank is kept at about 75-83 degrees (changes during night/day in summer) if you would like to know,
i co-habit him with 2 anoles, a green one and one that we caught, we don't know for sure what kind it is... draco (the gecko) is about 7-8 inches, the ga is 3 inches, and the ?a is 4 inches. no behavioral problems yet, not even the anoles.