the two are so far different its impossible for me to imagine someone wearing the two together
rick owens is rooted in streetwear, he took a lot of inspiration from that when he lived in L.A.
you can easily make a decent fit with like a rick bomber and a preme tee + jeans and sneakers or however you want to do it. as long as you don't go overboard on the goofy highfashion stuff it's p easy to tone it rick down and make it work with preme
edit: something like this, but with a preme 5panel or tshirt is what i mean to kind of give an example
you cant go overboard on "highfashion" its art
yeah you can get a good looking fit with supreme and owens but thats not how you should do it