Right now, Khan's Guards are arguably a downgrade compared to Kheshigs (T5 predecessor) due to having a mace rather than a second quiver of arrows. The mace isn't really good for what Khan's Guards are (hybrid HA/shock cav). The AI sometimes makes questionable decisions when choosing between glaive or mace, trying to tag people at a gallop with a weapon with under 80 length (like the mace) is almost never a good idea, whereas the glaive is ideal. There really isn't a good reason to use the mace in most situations: the sole exceptions are a wall-press or when fighting in a doorway, both during a siege.
Everywhere else either the bow or glaive is better and certainly a second quiver would be more welcome than a very short tertiary weapon.
Everywhere else either the bow or glaive is better and certainly a second quiver would be more welcome than a very short tertiary weapon.