I'm not sure about "common" gear swaps. Probably the AF2 mask is about it really.
The AF2+2 gear further enhanced would be some really good situational gear, though. Warrior's Mufflers+2
- Can be further enhanced to be a Mighty Strikes gear swap to add 15 seconds to duration. Warrior's Mask +2
can be further enhanced to give a 4 TP Bonus per merit level of Savagery. Warrior's Cuisses +2
can be further enhanced to give +1% crit rate to Warrior's Charge per level. Warrior's Calligae
can be further enhanced to give 1% Spec. DEF reduction per merit (probably not worth it thinking about it.
The body can be enhanced to benefit Aggressive Aim, but no one merits Aggressive Aim.
I should get my AF2 out of storage...