[Jack Simth]

Slight correction - well made armor didn'tslow down people who were trained to it, much; a well made suit of plate armor basically spreads 50 pounds (or whatever it is) of extra weight around you. An acrobat not trained to armor is going to have difficulties doing acrobatics (balance has changed, there is more mass to push and so can't move quite as fast, et cetera). Someone trained to such armor, however, won't have a major problem (used to the altered balance; musles are accustomed to the extra mass, and so apply extra force; et cetera), but will still have some lesser problems (50 pounds is 50 pounds - the plate armored knight will tire faster than the unarmored counterpart; while the armored knight is used to the extra weight and can manuver, it does still slow down the knight's movements slightly (although not as much as someone who isn't used to armor) compared to the knight's unarmored state). The knights of old could do cartwheels in good armor (if they could do cartwheels, that is) but almost nobody else could. Consider it a fighter-type skill "Negate Armor Penalty" or something.