The ones you fit without the roof bar actually tend to be more hidden as they can sit down in the drain channel - one thing to be mindful of is the this means the awning fabric can sit right on the paintwork and rub depending on your awning.
The ones you fit with a roof bar have to have the channel sitting up and out on the roof itself to give the roof bar feet room, so you are more likely to see the channel from the side. Of course the roof bar offers some distraction here and the channel might be taken for part of those fittings.
The ones you fit with a roof bar have to have the channel sitting up and out on the roof itself to give the roof bar feet room, so you are more likely to see the channel from the side. Of course the roof bar offers some distraction here and the channel might be taken for part of those fittings.


