I think you're a bit confused on what you're going to play or haven't really looked at the skill trees properly because there's no sneak attack in Rogue or Defense.
Yeah, totally got the name of the skill wrong there. It was the only thing that was coming to my sleep deprived mind on the bus to work at 6:30am
Lethal Strike was what I thinking of. There is a Neak Attach, but it wasnt actually what I was thinking of at the time. Might give it a try to see if it is any better than Lethal Strike.
And I am using the Taiji Dao skill which, according to the description, applies the bonuses to dual wielding axes as well. Add those bonuses to the weapon bonuses from Defense (the Concussive Blow and Heavy Weapon Handling trees) and I was liking the sound of a dual wielding axe murdered with a bunch of helpers.
Thinking I might leave LMB as basic attack (nothing is jumping out at me) with Lethal Strike as RMB, while spamming Flash Powder as much as possible to increase survival chances.
Worth a look anyway