If you're going to run Sand Rush just run LO. Like, you're going through all the effort of setting up sand and switching Dracovish in. Just use it as a late game cleaner. Strong Jaw Jolly FR hits only 5% harder than Adamant LO FR but in the sand you're way faster. Also while you can't as easily use biting moves Life Orb does buff stuff like EQ and Low Kick so you can still cheese through your "counters" (EQ 2HKOs Pex with sand, Low Kick 2HKOs Ferro at 95%). Banded Sand Rush is just Scarf Strong Jaw but with extra steps.
Imo Sand Rush doesn't invalidate Scarf of Band, it's just another viable set.
By viable I mean broken.