Yes, Fracture is a DPS loss in the end, and big TP drain. The reason why Shield Swipe is good though is for the TP maintenance. Half the TP of Fracture while only 10 potency less. The ideal number of Shield Swipes per 3 hit rotation is 2 for a 10 minute fight, as this will allow you to preserve your TP pool through out the 10 minute fight with no waiver in your DPS. It equates to the highest possible potency output in fact over never using it or just using it once per 3 hit combo for a 10 minute fight. However, this is assuming there are no points in the fight that you're not doing damage, and getting 2 Shield Swipes per 3 hit combo is difficult sometimes. 1 Shield Swipe per combo is fairly normal though, and with just one, you'll not run out of TP for about 5 minutes and 30 seconds. But not using it at all means a total TP loss in about 3 minutes.
