Thanee said:Because of the rules given for bucklers, which are - by the rules - the only shields who even allow the use of two hands, and therefore are the only shields the Force Shield can compare to.
I don't believe it compares, because the buckler is hanging off your hand the entire time. The force shield is simply not there at all when you are attacking.
Since the Force Shield has to be wielded, you cannot use it while using a greatsword. You can - as outlined above - deactiviate it to use the greatsword and activate it afterwards, but it would still not grant an AC bonus for one turn, since you cannot wield it properly, because you attacked with your shield arm during your last action (see buckler rule).
I don't agree with that reasoning.
Answer me this: If you can't use it with a two-handed weapon, what use justifies it's cost? A +1 ghost touch shield is less expensive and blocks incorporeal, and gives a better AC bonus.