This is how communion and Holy magic have always worked and i assume it's on purpose. It does not work for regular magic.
Edratman-
Quickness does let you use spell casting items twice a turn. BoQ and Fireball Wand, Skull hat, Staff of Corrosion, etc is a very good tactic. Q does not let you shoot bows twice though, and if you try it with x-bows to get them to fire every turn the archer will go whacky and often charge the enemy with intent to use the crossbow as a club.
