Secondary Weapons/shields/two handed weapons

ok, as i'm sure aleron would tell you, most people, with or without the use of magic would not be able to wield certain types of weapons one-handed and definately not w/ the use of a sheild as well. i was wondering if maybe we could introduce ways of having benifits and disadvantages to using shields, one-handed weapons (normal swords,axes, etc), two-handed weapons (most polearms, greatswords, bows,etc), or two-handed weapons w/ penalties for improper usage (a polearm weilded differently to allow the use of a shield)