Can the benefits of the Shield Gauntlet Attack feat be applied to a pair of gauntlets simultaneously? Here's the text I'm focused on.
Shield Gauntlet Style
"When using this style, if you begin your turn wearing a gauntlet or spiked gauntlet on your *off hand*..."
Shield Gauntlet Attack
"While using Shield Gauntlet Style, you can calculate the damage of *your gauntlet* or spiked gauntlet using the sacred weapon damage value of a warpriest with a level 4 less than your base attack bonus."
I had originally thought the "Attack" feat could theoretically allow you to apply the damage bonus to a gauntlet on each hand, and then you could employ two-weapon fighting. However, with the specification of "off hand" in the "Style" feat and the use of the singular in the "Attack" feat, I'm wondering if this is all restricted to only one hand. That would be a bummer, but I thought I'd see how others read this all the same.
One attack with TWF. Two with ITWF.
Offhand attack is now only the attack used to gain the extra attack. Your main attack takes the primary and iteratives. Source: FAQ
We've played it where Shielded Gauntlet Attack makes all attacks you make with Gauntlets use the WP sacred Weapon damage (level -4), provided that you have taken the swift action to enter the stance that activates the style. As in "that's what "while using Shield Gauntlet Style" refers to- this is a bonus you get only when using the style, not at any other time.
So it should work with Two-weapon fighting, if you punch people with two gauntlets.