There are Templar guilds out there. I haven't seen any in awhile, but they do exist.

It's always tricky to try make such guilds restricting werewolves, vampires, races, classes, etc. You must be prepared to deal with your roster having other classes, etc. You will have to choose between put up with it or go full tyrant and restrict character usage to the type you want. That, of course, will not be popular. I lead a werewolf guild and what I do is require that they have at least one DC Werewolf character, for events and such. In reality, you end up becoming good friends with your guildies and eventually stop caring if they play a character that doesn't fit your guild. Of course, like I do, you can always restrict your guild events to let's say "You must log your templar to join our group tonight.", etc.

I've tried to track down whoever owns the Aundae Clan guild.

No dice. *** took it and probably don't play any longer.

Early in the game some friends and I were going to do this, but we realized that most of us also played other alts. It would have been fun but ultimately didn't seem meaningful (to us anyway). I do however really wish they had a proper counterweight faction of sorts to vampire/werewolf. What I mean is something more meaningful from a storyline perspective, that would offer interesting abilities or toolsets that are mutually exclusive to vampire/werewolf.

I like this idea, I may just create a Wrecking Blow only guild.