Thule vs OEM Roof Rack?

Was thinking of getting OEM rails but friend has a newer CX5 and was gifted with Mazda OEM Rails and Crossbars. He's not happy as there are no accessories or even tie downs. Then I thought, Thule has some nice bars and some look like they lock/clamp to the OEM Rails.

Anyone running Thule Aero or other Thule Crossbars with tie down eyes or other accessories? Mainly want to have for either adding bike rack or a ladder. Or even some long items from HomeDepot/lumber yard (moulding/trim). Nothing to heavy.
 
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