It's evident now that Bethesda clearly doesn't give a hoot about magic users. They dislike magic and don't want people using it, so not only do they screw it up, they leave out mounted combat for magic. I get the hint Bethesda. You want me to be a warrior.
Or they couldn't get it to work right, and they wanted to release melee/ranged mounted combat to us instead of holding the entire thing off just to add magic...
But hey, if you don't like it, then I guess you just can't use mounted combat at all. That's clearly what you want.
(PS we may want to gather in all one http://www.gamesas.com/topic/1376250-update-16-has-mounted-combat/... We don't need like 4

)