I play my rogue with DW and it does a lot of damage. Usually since he has high initiative i delay the turn so when every opponent finish his turn, i play 2 turns in a row. I use the teleport/backstab or i go behind him with the skill that provides some movement without using AP. Then i do enough damage to either kill or have have the opponent at less than 50%. Also if you have the opportunists skill it can help by teleporting to a range/caster so when he tries to move at this turn he will get 1 more backstab for free.
As far as the 1h shield i will test it since it sounds intresting!
Skilling in stealth is a big fail so far or maybe i havent figure it out on how to play a stealth rogue!!!