The force field is shit unless you go all out kinngrimm. With 6 shield skill I often get shot by ranged I'm facing.
I thought 6 shield and a MP Huscarl would help against being shot.
I thought wrong.
Force-field shields eat up arrows on horseback, but I always felt that manually blocking a melee weapon gave more of a force-field effect from horse than a shield did.
Yeah, I'm currently 2h cav right now and it's NOT the shield giving you a forcefield when on horse, it's blocking on horseback in general. Same as you can manually block a right or left swing from behind, you can block stabs, overheads and both swings from almost all around you when on a horse. Even more so when not using a shield.