Visited this museum after work when I was in Charlotte for business. Admission is free after 5pm on Wednesdays which gives you just enough time to see their collection.
The permanent collection is strong in the Contemporary Art and glass collections. Loved the Chihuly chandelier. They also had a painting by Chihuly - you don't see that very often.
The museum store has great items and a very strong collection of local artisan jewelry.
Pro-tip: they have a parking structure that they share with the banking company next door - it's only $5 after 5.