Those sport boots, ( the ones that wrap the lower legs,) Arnt not very common in endurance.
One of my bf's geldings goes in sports medicine boots all the way around because he interferes. He has done many years of endurance rides -- including top 10 finishes -- in them with no issues. Like any piece of tack, you just have to make sure they fit properly and stay put on trail.
This is us on trail during the Old Dominion 100 a couple weeks ago: