Without networking setup (depends again on what actual NIC is in your gateway box is and if it's supported in AROS), have you tried playing MP3s? How about games? Lunapaint? Yes, apps are light in AROS, but that is slowly being developed. Even more so if you do not have working network.
Since you have it fired up, how is the speed on your gateway? Can you guage on how well it will do with a native install vs CD/DVD access time? It's here now, it's working, it's being improved as time goes along and it's cost you nothing yet you can have the full source code access. If it doesn't please you, check out AROS in another six months, you may be very happy by then.
Dammy