toodeep wrote:
My question is whether a TWF unarmed fighter could take advantage of the new defensive dualist combat style offered in the primer as well as the duel wielder feat, since the second hand is both "completely free" and a weapon.
Pugilist (style) does *not* make your unarmed strike a "weapon", so couldn't benefit from Dual Wielder (feat) (or most other TWF style/feat options). An actual weapon is required.
Defensive Duelist (style) will work if you have an actual weapon in your primary hand (cestus, dagger, gladius etc) and you use Pugilist (style) for the offhand. However, you will need to be a 10th level Fighter (Champion) to get the second style.
This is an issue for most of the obvious 'good' combinations.