I guess the subject basically asks my question. I am playing a shielding swordmage who just hit level 4 and I am trying to decide between the above two feats. Is taking versatile expertise necessary? Do swordmages have that many implement powers? If so, which implement is most effective for swordmages? I don't really like the idea of holding an implement in my off-hand and reducing my swordmage warding AC bonus, so it would seem to me like just taking Weapon Proficiency is good enough. Is there something I'm missing?