I originally bought the SG Apple Watch Sport and the band I really wanted was the Milanese loop.
After going to my try on appointment, the Apple Store employee graciously let me mix and match any band with any watch. When I asked her to try on the SG with Mileanese Loop, I saw her flinch. She was polite and didn't say anything at first. When I put it on, I flinched a bit too. I think seeing my reaction, she said "Yeah, it clashes and not in a good way". She then brought a few colleagues over (all women) and they all said the SG with Milanese was a "Fashion Trainwreck".
I tend to agree. In fact, any band made for the SS (with the exception of the Black link, which cannot be purchased separately) looks gaudy on an SG Sport. On the aluminum sport, they match so much more. Personally I am not a fan of the aluminum sport, so I ended up pre-ordering a SS with black sport band. I'll keep both pre-orders though.
Take it with a grain a salt, but 3 women working at the Apple Store all said the SG With Mileanese was a fashion faux-pas. Kind of like the old Casio calculator watches.