How would you compare it in consistency to eco complete fine grade? That's what I use now and I think from pictures it looks very similar.
I actually haven't seen fine grade Eco yet, in person. If it's just like normal Eco but smaller particles (my suspicion), I would think the weight issue would be worse, if anything.
If it's heavier than normal Eco, then it's probably comparable. Except perhaps from a color standpoint. (although again, I have yet to see fine grade Eco in person)