Have not done this. But I would suggest getting a mower that can be set at taller heights of 5-6 inches to use in a pasture. You still shorten weeds to prevent reseeding, yet not shorten the grasses so much that they stress, reduce production or die. Longer leaf length left on recovers faster from mowing, provides shade to the soil and plant roots, helps build strong roots that take horse abuse. You need to mow more often, when height is 8-10 inches or the start producing seed. Plants shut off growth when they set seed.
I am growing pasture for maximum production, have 9 horses using this as their primary food source on limited acres. No obese or metabolic horse to worry about health issues. They are on night turnout, stalled during days.
Horses with issues probably would do better on less productive grazing, letting it go to seed to reduce nutrition value.
Our neighbor uses a Swisher to mow his established paths on his acreage. Not cutting new paths in the high and thick weed growth between the paths. He does mow it lawn short.
Perhaps asking about quality at a mower repair shop would help. What kind is in to repair often? What brands do they never see?