Yes you should, and only use SotF on specific fights (Feng for example) to help with burst aoe recovery. I don't use SotF at all anymore, but I can understand why some want to use it.
---------- Post added 2012-11-07 at 03:54 AM ----------
In 10 man it's not so much that you can get away with less spirit, it's that you can't afford to lose throughput by stacking spirit.