I have my two SF in a colony set-up along with several Thriantas. Even though the Thriantas aren't really light (very dark red,) they show the dirt where the SF don't. I also find their temperaments to be quite conducive to colony raising. Very chill rabbits, even though mine aren't "cuddly" since they haven't been handled much.
Also, the coat is something that has to be felt to appreciate. It is so dense and luxurious. A good is quite comparable to a real Fox fur.
I'm developing the SF in red. (We'll get there someday!) It already comes in black and blue, chocolates are beginning to be more common as well, REW pops up frequently, and as the chocolate increases in popularity, we're starting to see Lilacs. We have all these colors, but so far only black is showable. CODs on blue and chocolate.
It's a fascinating breed to be in right now, lots of development going on and I think numbers in the near future will reveal a surge in popularity. I really find them to be quite wonderful and after trying out Rex, I would never again attempt to keep one in a colony setting! Heck, for fur, it's tough no matter what, but little scraps resulting in some yanked hair are far more visible in the Rex and other breeds that are more thin-coated.