I took sweeping strikes for Xavius, for killing the add it makes life easier and if you can get good positioning you can cheese it to no end (so it absolutely will be the best talent). On a typical progression kill though not sure how convincing it is, you sacrifice your single target for it but it seemed worthwhile to me, those 2.5mil MS crits and all.
Need more pulls on the boss to figure it out, but I guess I will be sticking with SS, logs are not that loyal because you don't know the level of cheese going on. Someone else cheesing with a strategy you're not using isn't helpful data.