Board Thread:LOC General Discussion/@comment-216.125.251.254-20130204164334/@comment-5686362-20130517165053

I can confirm all your calculations up to sk7 -> sk8.

Once I hit sk8 I've just used GBDs to get it to sk10 so I can't confirm the last two. So basically you can skill up UR ex to sk10 without the use of GBDs but it just takes a lot of junk rares and skilled commons and a lot of time.