Like guideline #2 says, "If in doubt, post to the community forum". And I am in doubt as to where this topic belongs so I am going to post it here.
The title of the topic should be rather descriptive but I'd rather specify. When do horses impede climbing and when do they not? I would think that if we're talking climbing climbing they should prove rather useless. But before that? Are they more trouble than they're worth?
I'm new to climbing so maybe there's something I haven't considered. I've done several horse pack trips into the back country for fishing excursions though.
I'd say horses are a great tool for getting to remote areas with lots of stuff (gear, camping, food, etc.). Whether the end result is fishing, hunting, climbing or whatever the horse is a tool to get there. I don't see how they'd be detrimental to a climbing excursion at all.