Thief sword/pistol build tips
Pistol whip is hard to land against players. The initial stun takes so long to cast that good players will avoid it. And it is a channeled skill, so often you will be whiffing away at nothing while frozen in one spot while the target is getting away. The sneak attack with sword is really weak as well – not that you will get into stealth often with that combo.
Of all the dual wield combos my favorites are dagger/dagger and pistol/dagger. 20 points or so in shadow arts is key to getting the most out of the dagger offhand to set up sneak attacks for a cheap initiative cost.
Thief main plus a few alts – Sanctum of Rall