I negotiated free crossbars with the purchase of my E-Pace SE. Since I don't have roof rails, they provided me with the crossbars that don't need roof rails. Why did I want crossbars? Because I, too, have a kayak and a rooftop carrier to use. What I cannot offer you is experience with the Jaguar systems - I haven't put the crossrails on yet, but they look to attach the exact same way as my Volvo crossrails system - which was VERY simple and solid.