I have a player who is an arch-militant who wants to wield a powerfist and powersword. Since the fist cannot parry the sword would allow him to continue to recieve the defensive powers of parry. I feel like this is wrong since a power fist prevents parrying then you should not be able to get around it simply by having another weapon that can, because if that was how it worked then why would anyone ever only use a pwoerfist (simply not fight with your offhand to prevent suffering two weapon penalties and reap the defensive values then). Of course I want to check with everyone else out there and see how they feel on the subject.
If you were the GM for this what would you rule?