It is doable and a viable option if you wont be tanking in groups much. If I remember right though from looking at the stats on L2cal, the actual dps output from using a 2hander or a 1 hander are actually pretty close, so it comes down to a matter of pereference. (2 handers higher patk is balanced by the slow swings so it equals out really)
Well, it works fine for my TK since i cand afford a dama+focus. When soloing or not being the main tank i use a great sword+focus and helps a lot. So i think it is nice for the SK also.