Inquisitor Lorr was a 30th anniversary miniature that was released back in 2005. I did pick one up and unfortunately I have had it on my workbench for way too long. When you consider that GW just celebrated their 50th anniversary.
It is a very nice model and is based on the Witch Hunter model that is available in the boxed set, but has a different weapon (plasma pistol) and is pointing rather than holding a sword. Personally I think it is a better model.
Rules can be found in White Dwarf #304 for this model.
This is where I had got with the model.
More photographs of the model from the workbench.
