For those who would be wondering, this enchant, and the boar's one as well, do NOT stack up with the Arathi Basin PVP boots that already have a run speed on-equip bonus on them. I ran the length of SW Keep barefooted, from entrance to the very back wall of the Battlemasters room, at 35seconds, then simply the pvp boots at 30-31sec, and the pvp boots with the boar speed enchant on them clocked exactly the same as it did without the enchant, so both do not stack.