Maybe for later, but it did look hilarious when I tried with a greatsword. One of the hands don't properly rest on the pommel, but the animation isn't that great for polearms either. A few more polearms may become swingable on horseback though.
@Grumbs
For some reason, my test server no longer shows up on the crpg list. I am worried about autobalance, old knockdown roll tweaks, lag, and new items.