I didn't see how dervishes could be great runners at first. Avatars serve different purposes like hex and condition removal. Then there's Vow of Silence which will be especially good when going through places with slowing hexes.
Running to Deldrimor War Camp should be easier now, and one place I had thought about was Scoundrel's Rise where the mergoyle wavebreakers slow down the run greatly.
I know that running Tyria is not very difficult at all, but Dervish runners it seems will be able to cut down run times a very noticeable amount.