So the build I'm currently running is a Stamplar with mainhand bow, and I'm having a hard time choosing between 2H and DW. 2H is certainly good for Rally, but I'm also drawn towards DW because of the more agile playstyle and moveset, along with the utility of Steel Tornado for mobbing.
Odds are I'll be switching whatever I pick to my mainhand eventually, since being an imperial archer makes Red Diamond pointless.