The relevant effect of the feat reads as follows:
While wielding a longsword, you can perform an impressive display of prowess as a full-round action. All allies within 30 feet who can see your display gain a +2 sacred bonus on attack rolls, saving throws, and skill checks for 1 round + 1 round per 5 points of base attack bonus you have.
Will the user of this feat also benefit from the sacred bonus?
I ask because it is a bit similar to a Bard's performance in that "All allies in X range that can see/hear the performance" benefit from it, though that one does affect the Bard itself.