I haven't found this question before so excuse me if it's been asked, but how can I see my custom saber skins online? I just get standard sabers. I can see and use my custom characters online, so why not sabers? (Really want to use Sephiroth's Masamune and Cloud's Buster Sword.)
The server has to have the sword and hilt mods on their side otherwise it won't work.
Is there any way to tell if the mods are enabled without connecting to the server?
Not really. If you're in a clan, most of them have a page that says what mods, hilts, swords, etc are on their server.