It's only a dps increase short term, FB>SB>RA combo is an average potency of 230. old shield swipe potency was 210. Before they changed it with bulwark, sheltron, and natural blocks you could at times shield swipe 3+ times in a row. I had one instance where I had 7 swipes in a row. the potency may be slightly lower then a RA combo, but the TP cost more then made up for it in the long run. Now I find myself consistently running out of TP in raids where we don't have ninjas even with proper rotation between the RA combo and GB combo. Now this only came into play against physical bosses mind you, magical bosses go slightly better then before since we do have a TP reduction to our DOT combo