I had a gaited farrier work on my boy for a long time, told me a lot about the angles and breakover time, balancing the hooves and leaving length or takfing toe...
Then he suddenly got hurt and had to retire. Now I just use the local standardbred farrier- lots of racing around here- and you would never know the difference.
Just trim to your horse's leg, and allow his natural gaits to come out :)
There's a lot of just, plain "balderdash" in circles proclaiming "gaited horse expertise." It is true that for every problem there is a solution that is simple, cheap, and wrong. It is also true that "experts" in any field profit from complexity so complexity proliferates. That means the equine husbandryman must be on constant guard for both types of "charlatans."