Yes, I do find my CWC to be very easy to wear because of its slim height. I think the GSAR is 14mm thick? - I have a 14mm/40mm diver and on occasions it seems a tad tall but after a while I rather like the 'heft' of it. I have a 7 inch wrist but yours looks bigger if you don't mind me saying (!) so the larger Marathon is easier to wear maybe?