No 2h sword. You can just get a lance, sheild, and polearm (bec, long hafted penis) for dismounted fighting. But if you must get a 2h sword, you're build will be high agility, in order to get the WPF needed for two weapons, and also for riding.
I've got
PS: 5
Sheild: 4
WPF: too much
Athl: 2 (too little)
Riding: 7 (too much?)
IE: i messed my build up. Next is a hoplite/cavalry guy. I would suggest higher athletics than 2 if you plan on using that 2h sword on foot.