That's what we use. Open Paragon Chat instead of CityofHeroes.exe, then it'll connect to chat.cohtitan.com so you can talk with others.
As mentioned elsewhere, Paragon Chat is all we have. It's a chat program. No enemies, NPCs, combatants or missions will be available. It is only a chat program. You can use Travel Powers, Emotes, and Badges, which are an improvement from when it started out two years ago, but combat will not be a part of this program.