greengrappler, Berry Juice was voted on a while back, and it was determined not to be ban-worthy. I personally feel that Berry Juice adds some much-needed diversity to the metagame (give Eviolite some competition), and while there are some annoying abusers (Endure+Recycle Magnemite) the truth is that Sturdy+Juice is easily dealt with by a prepared team.
If you need a good Sturdy+Juice counter, look no farther than Drilbur: Mold Breaker ignores Sturdy--Jolly Eviolite EQ is a guaranteed OHKO on Magnemite or Tirtouga, LO Rock Slide has a 75% chance of OHKOing Dwebble, but Eviolite Drilbur walls Dwebble anyway).
Beyond that, just get Rocks on the field. Worried about Defog? Pack Pawniard as well.