I don't want to equip an item because 1) what makes him cool is the looks, not that he can be summoned which is stupid and I shouldn't have to equip something and 2) equiping an item means I need to first find said item which will likely not be better than other equipment I've made (since imo, all the best gear is made smithing, then upgrading. I don't use enchanting because I don't want to have to refil everything) and 3) to fix the last problem I'd have to grind enchant since I'm pretty sure mine is under 20 and probably won't be able to add enough magic to be helpful. I might do that anyways since I'm nearing 100 for all the stats I've chosen to use and don't really want to stop leveling/upgrading things, but I still want a permanent awesome looking undead horse. When I saw the screen shot of it I got excited and thought it was awesome, so finding I can't even use him is a huge dissapointment.
So your lazy? Thats your basic execuse, you do realize you can carry more gear the you wear.
Buy a item that fortifies magicka, equip it cast the spell to summon the horse then unequip it. You could use the necromacers amulet it adds 50 magicka AND fortifies your conjuration plus its free. And as I said before The Atroach standing stone adds fifty magicka. And you don't use enchantment because you don't want to refill everything? That only applies to weapons not clothing or armor.
What I don't get is why so many of you are opposed to this one little change. It won't unbalance things, it will just allow those of us with a non-mage focus to use him without hassle, so why are so many of you so hostile to the idea of it being changed?
Patching DLC is NOT POSSIBLE. Dawnguard is how it shall always be. The only way to update DLC is for them to replace it entirely and for everyone to redowload it. All of which would cost Bethesda a good deal of money why should they spend that cash because your lazy? If non-mages can't be bothered to equip a simple item or use the atroach stone to summon him because it doesn't fit their playstyle, then using and undead horse from the soul carin at all should also break the playstyle.