I've found CH to be the best all around mod for me. I note that you already have it. It
does have provisions to harvest/loot/talk from the saddle. As well as provisions to adjust the horse's AI and speed. Some functions are advertised not to work with summoned horses, but I'm not sure how much of a problem that might be.
You might get a kick to know that if you are using CH and have Serana along (and follower horse riding enabled), she will summon a fire version of Arvak and use that. And she will get quite snitty with you if you complain about her flaming horse of bones!
Although I prefer the OB mechanics of horse movement - that allow you to look all around while riding, I have gotten used to using the mouse to steer and having to stop to look around.
So my top two complaints with Skyhorse mechanics are:
- Horses cannot back up! Pretty darn important for an archer. It would be so nice for Buffy to slowly back up Superian as she shoots rather than having to turn and, thereby, lose the ability to fire.
- No (vanilla) summoning from the saddle - not even on self spells like bound weapons. Mods can fix that of course.