Not sure how they have scratched the SG casing. I've had mine over a month and wear it for everything. I reach under the lawn mower and scrape off matted down grass, worked on flooring, done lots of carpentry, hiking, disc golfing, climbing, biking, and more, and haven't got a mark on it. I've had to wash it under the tap quite a few times, but never s mark or scratch.In terms of holding up best to scratches I'd say silver aluminum def better. I have had both versions and stuck with the Silver after seeing damage people had on the SG casing that was noticeable as it scratched to a lighter color underneath. SG does look nice comboed with many bands but the fact that silver hides scratches much better was more important for me.
Also I like how the Silver casing "pops" with the black bands vs being seamless on the SG.