One got loose in a pet store I worked at once. Several months later...
::cues the fog, brings up the background music::
on the way out one night, we see a rat crossing the main floor on an overhead pipe when he stops all of a sudden. We look ahead of him to see the missing Tokay coming fromt he other end of the pipe. The rat stepped forward cautiously only to wind up being grabbed, shaken like a dish-rag and thrown to the floor by the Tokay.
You do not want to be stepping on one of these by accident. If you live in the tropics, you have plenty of native species to keep the bugs down w/o resorting to letting these little monsters run loose in your house.
Seriously - these are nothing like leopard geckos...