I can see where SOEmote could be fun with people who aren't power adventuring. The thing is, how often when talking to another player are you turning and looking at their face? Right! Probably not very much. If you're a roleplayer hanging out in the Green Dragon, I could see using SOEmote for shits and giggles. If you're a roleplayer in general, I could see using their voice pitch gizmo that can make you sound like an ogre or a gnome. If you don't roleplay and don't socialize much, you're probably never going to use it.
Also, doesn't SOEmote require that you use their voice chat system? In my experience, most guilds end up with their own voice chat servers.