So Taking a look at Feudal Guardsmen, The basic Infantry squad can buy from upgrade table A (Representing a Sargent), now the wording for the last option is where the fun part comes in. The rest of the table says replace ONE weapon with another, The Option to take a Feudal steed has no restrictions. Therefore it looks as though for 50 points you can give a unit of Feudal guardsmen or specialists Mounts to create quite the over costed Dragoon unit.
Am I wrong in my logic? I mean its not Really game breaking due to the Premium on the steeds and in order to make the most of it you are dumping 400 points into a large Mounted Fusion gun Blob of death (2xFeudal specialists all with Steed and fusion gun 1 commander with Steed and Orders)