I understand that, but I'm just asking which fights in particular you feel you would take it. The only other fight that demands sustained feinting would be megeara, though you usually do 2 feints and 1 cloak with or without the glyph and that should cover it well. In this scenario it would probably be better to use glyph of sprint if dps is a concern.
I'm not saying it's bad, I do often roll with it but I think this is the least mandatory one there is.