This shouldn't be two posts - this should have been part of the previous one. And really, its debatable whether it needs to be a post at all, given that there was some fairly significant discussion of gouge in combat cycles a couple of months back that I'm sure would be quickly turned up by a bit of searching.
If gouge was added to circle, the benifit from haste would be lower, because gouge require much less energy per point than SS. At this case, it is more likely that each GCD will be performed. Ofcouse, under AR or other haste buff, when it is possible to perform a strike on every GCD, then gouge should not be use at all, so does rupture. They have high damage per energy (inaddition, gouge have much less point per energy), but low damage per hit. For the same reason, it obviously that gouge is best performing when not under any haste buff and AR.
There is also a conclude that gouge is even more competeble for alway perform RvS before finishing move:
3 point - gouge-RvS-Evis
4 point - RvS- Evis
This way, all damaging finishing move will be covered under RvS, and no point will be wasted.
Waiting for more stastic and discussion about gouge.