I understand that you need to create balances in the game, but you still need to proceed in a logical manor about it. Balancing it out is making them take a shield feat to use a shield, not creating a rule that is illogical when placing it against the other rules of the game. I am not comparing it to real world, for we all know it is a fantasy game. What I am comparing it to is the rules in which the game currently exists. By the ruling of using a shield, anything in the off hand should produce an arcane failure chance with somatic components.
Thanee, you are right and there needs to be a balance in game and mages really become powerful in there own right. I just want to see a consistency among the rules to produce this effect. I agree with Frankthedm, that a rewrite of this rule is needed, but it should be logical. A buckler and a weapon should produce the same arcane failure chance.
kayn