The most popular 1on1 servers have been missing from the QTV website since the project took a few steps forward and people actually began using this piece of software. This has changed though and they are now QTV enabled for your viewing pleasure.
The Quake.se servers are finally QTV enabled. This means there will be very much more 1on1 games to spectate and yours truly have been longing for this ever since the Quake.se servers were launched.