According to the Military District of Washington, the reversal of the boots "indicates the warrior will never ride again."
Not ALWAYS true:
Revelation 19
13 He is dressed in a robe dipped in blood, and his name is the Word of God.
14 The armies of heaven were following him, riding on white horses and dressed in fine linen, white and clean.
What do those two verses have to do with reversed boots?
I'm sorry... but what do those verses have to do with the subject at hand...