Yikes. Of course it's there
LO has been overlooked mainly due to I spend tons of shards and I often need to be able to spend them on CoD and such. But it's worth a point certainly - I have it in my current spec tbh.
But the main question is whether Vile Corr dot is worth giving up more crit on bomb & sds dot... I guess I'll have to do some strawmans to figure it out if people haven't tried it already.