Well, the only inconvenient I see with your build is that you wont have any interrupting moves to give you a second to replenish your HP. Moves such as Stun and KB on a Spear nuker, or KD on a S/S nuker. But I guess if you get really good, and I mean REALLY good armor, you will probably be able to fend for yourself in PvP, Jobs, or Wars... also I would take a S/S most of the time, for more chance of surviving.
Just my 2 cents
