I've had a friend that GMED it in a day. So I guess it depends if you want to go around and use the skill on NPCS constantly. If you use it just with magery, be prepared for slow gains.
Hint:
Gain like 3-5 times off a NPC, then find another npc to train Eval Int
What I think is unfair is the fact some players started with 3 GM Skills when they started this shard. Because I'm still working on Eval Int/Resist after playing for a lot of hours.
It was an offer given to players from AT the first month Acropolis opened. Its to late now. This promotion is has been over for months.
As for some skills being slower then others, Its the way it will stay. I feel it brings a balance to things.
I'm breaking the limit inside you, stop begging someone to hide you. I'm breaking the limit inside you, don't run away, bring it on straight to me!