Our walkers have shoes with borium, and they gait just fine. The farrier puts the borium on on-site when he puts a new set of shoes on, and he is. . .generous with it.
It's nice to have for those trails that get a little more goat-y and the horses end up scrambling over boulders, up banks and sliding down greasy hills.
As I said in another thread, boots work better for some terrain types than others. If you're in an area like me be prepared to lose your boots or do a lot of dismounting and remounting to retrieve them.
The ground is muddy almost year-round in some areas and it will just suck the boot right off the foot. But, on the very same trail, you may find yourself on good dirt footing, or gravel, or flat solid stone.
The only people I know (locally) who do the barefoot/boot method successfully are people who only go out for an hour or two, once a week, at a dog-walk, and only if the weather is nice and the trails are all dry and clear.
I don't doubt that some people in other regions and climates have a lot of success with the barefoot/boot methods, and I'm happy for them that it works for them in their situation.