Whoops, did not express myself correctly. By the running around I meant carrying the knight to and from the battlefield, as well as carrying him during the fight. Which is not what they did, obviously.

Concerning this, I wonder if knights participated in skirmishes? I think not, considering they had only one fighting horse and this was destined for a pitched battle, correct? This would be a good explanation as to why Latin armies were so vulnerable to effective skirmishing on a strategical level (harrying by parties of roaming horse archers etc.).

And, yes, the Byzantines rather admired the Normans/Franks for the power of their charge. Anna Comnena, not known for her love of these 'barbarians', remarked that their charge could bring down the walls of Constantinople.