Do not quote me on this, but you will only be able to have 3.3 inches of fish to put in the tank. If you get good lighting, it would make a good coral tank maybe, but I hear it's pretty hard to manage saltwater parameters in a 10 gallon.
I have a ten gallon set up as my backup water tank so I can do real easy water changes. I know the water is the right temp, salinity, ph and so on...I also use it to cure live rock and QT (if necessary) in between water changes. Not sure if that's any help...but I tried