Would the sabre be unbalanced?

[irdeggman]

This is what we did in Birthright (BRCS):

Saber: Khinasi cavalrymen favor the saber. The saber is a long heavy sword specialized for the long cuts used in mounted combat. Its slightly curved, heavy blade puts more weight behind the swing than the lighter blade of a scimitar. The Vos have adapted a heaver version of this long curved sword that is heavier than the Khinasi version, but no less effective. You gain a +1 circumstance bonus on your attack rolls when you use a saber while mounted. Game statistics: medium-size martial melee weapon, damage 1d8 slashing and piercing, crit. 19-20/x2, cost 20 gp, weight 4 lb

 

[Stalker0]

I think its fine as is. On horseback, dnd stats says the lance is the best way to go, so the sabre is just fine imo.