What about add these 2 features?

If there are amount of complex data in datatable, I think the following two features will be very helpful.

1. An option to show header both on top and bottom.
2. Make header on top fixed when user scrolls down. (like this one: http://legacy.datatables.net/extras/fixedheader/)

Both of the features can avoid showing double vertical scrollbars and make users know the title of each column. (browser scrollbar and datatable scrollbar)