That is correct. You can do this now and we will probably add an FAQ for this as well as add some more to the Page Help before we push it out.
Basically, if you are searching for a specific position, you will see the position role options in the Overall Rating drop down. If you are set to Advanced Position Roles, you will see all of them, otherwise you see just the basic default option. If you select a Role Rating instead of Total, you will see that in the list.