Yeah! Thats what I do pretty much. I use Falcon Slash + Uber Falcon Slash on my Warrior. I only have one Uber Falcon Blade unfortunatly, so I just use Ederick's Sword on my Minestral for when I have him spam that.
Against really strong grottos, the normal Falcon Blade just doesn't seem to cut it on my Minestral when they have a crapload of defense... Octagoons are tough. Minestrals just can't break Octagoons with a Falcon Blade.
My strategy against bosses is spamming Gritty Ditty, Multi Healing, and spamming Falcon Slash/Whirlwind Slash.