All I've heard is hearsay as well. But Europe did away with the SCR and DEF 2-3 years after bringing it in because it was crap. The only reason it stuck here was because they can charge people an arm and a leg for what is essentially urine in a bottle and they know they have to buy it.
Shame Hoss didn't understand that the ELD being a Electronic Device was subject to Breaking Down. Lol