First off, thanks for the guide Mephe!
I have pretty much followed the guide and in 5 weeks I have my Fire/Fire Tanker to lvl 42. I did take combustion early on to have a little more damage, but respec'd it out already.
I find Swift very useful as I can turn on run and move quickly from mob to mob that I am trying to herd together.
(from the preview screen I see I need to update my sig!)