look for some stuff by volek and phinney, eads, or waroninsulin.com for pro
look at colpo and mcdonald for con.
theres more but i'm typing with one hand....of that crew i think phinney and volek are the only published ones.
from what i've read my conclusion is the advantage is in body composition, satiety, therapeutic applications and metabolic flexibility.
a starting point....http://www.nutritionandmetabolism.com/content/3/1/9