The post from long ago about how he spawns and then walks and ends up in the courtyard seems to be accurate. Ive caught him waiting near the bridge to the slaver pits (presumably just spawns). He is spawns less frequently than the Taskmaster.
The first Bracer of Battle that I got while leveling up in Crushbone I must have sold or destroyed without remembering the Prayer Cloth of Tunare quest. So I went back at a high level and camped him for a few hours and got the Bracer of Battle on the second kill. I turned it in to the High Elf in the cabin for the Prayer Cloth.