DM_Blake wrote:
No.
A heavy shield is, by definition, a one-handed (not light) weapon. The physical properties of a heavy shield are that of a one-handed weapon. For example, its hardness, hit points, ability to be crafted out of special materials, category for using the Craft skill, effect of alchemical silver, and so on, are all that of a one-handed weapon.
Compare to this FAQ which admittedly is about bastard swords but the same exact line of reasoning applies here in the same exact way.
The Agile enhancement can only be applied to light weapons which the heavy shield is not.
Melkiador's FAQ reference is another good example here.
Except the FAQ you linked states that, for all intents and purposes, when you are wielding a bastard sword one handed (requiring an ability to do so), it is a one-handed weapon.
By that same logic, when wielding a heavy shield as a weapon and possessing the Gorumite shield trait, itbis for all intents and purposes a light weapon. Therefore finessible, therefore a viable target for Agile.