Although I cannot find the article, it discussed use of Gardner's intelligences at a private school. The classes were broken down into groups. Each group rotated through the various learning styles. Those with a dominant style did better when the dominant style was employed. What I found interesting is that students got better after some adjustment to the use of a non-dominant style to learn. Seems like a win win.
Of course, Gardner's work has been controversial. Expense has been a constraint in some cases. Even so, I doubt I could of earned enough to live on if verbal skills were not the predominant intelligence the employer required.
Another Gardner article and a learning site for those who might be interested:
http://pzweb.harvard.edu/pis/hg_mi_after_20_years.pdf
http://www.nwlink.com/~donclark/hrd/styles/metalearning.html