Ok what can and can't this baby do?
Can a Duelist use it to get precise strike with two weapon fighting?
Can a fighter weapon swap light crossbows, or shields?
Can you weapon swap a two handed weapon (crazy I know)?
There is entirely too much ambuity on this feat right now.
Can a Duelist use it to get precise strike with two weapon fighting?
There is entirely too much ambiguity on this feat right now.
Oh man, ambiguity on this feat is just the tip of the iceberg in my lookover. Here's my take:
"When making a precise strike, a duelist cannot attack with a weapon in her other hand or use a shield."
One way to interpret this is that if you decide to use precise strike, you cannot use your off hand attacks because you've activated an ability that, according to the wording, locks your off hand in terms of attacks.
"After making all your attacks with your primary hand, you can swap your primary weapon to your off hand and make attacks using that weapon in your off hand."
This wording leads to the interpretation that Weapon Swap just happens as an after thought and doesn't need to be declared. I read this as meaning that the feat could always work provided you are doing a full attack.
This stands in contrast to Two Weapon Fighting, which has to be declared with the intent of using your off hand before you even begin your full attack as all attacks get the TWF penalty. This stands in contrast to Weapon Swap, where only the off hand attacks gets a penalty. This shows how the duelist cannot do Two Weapon Fighting and precise strike, but its not clear about what would happen with Weapon Swap.
Still, one could also assume that you focus on doing the precise strikes first, then swap to attack at TWF and Weapon Swap penalties. However, since the attacks get the penalties I would think that they would not gain the benefits of precise strike. So the main hand attacks are all precise strikes, and the off hand attacks are normal (and at penalty of course).
However, there's still the glaring "cannot attack with a weapon in her other hand" sealing that last thought.
I would assume that you can still hold a weapon in the off hand, so feel free to wield a +5 defending dagger, or better yet, a +5 defending gauntlet, and transfer all the AC from its enhancement bonus onto yourself. Just think of it as a ridiculously expensive shield that isn't a shield as you make your precise strikes.
My, $0.02.
Other opinions/rulings?