Mine has his favorite spots to lounge. Sometimes a crevice or hole, and some times out in the open. I'd say he spends half his time swimming. He's quite a people watcher, too.
We have a temporary frag rack of egg crate in his tank and he'll lay on that and stick his head through the side piece of egg crate and watch me...nodding his head up and down. Quite a cutie.
Btw - he is in with a dragon goby, two firefish, yellow canary wrasse, coral beauty, and a juvi hippo (1.5"). They all seem to get along great.