Back in May I reported (and commented on the fact) that Tennessee had rejected Model Rule 8.4(g). See here.
Now comes news that the Arizona Supreme Court has also denied a petition to adopt MR 8.4(g). The court doesn't usually explain its decisions on rule-making issues, so it is not surprising that it didn't do it in this case. Thus, we don't know whether it just doesn't like the Model Rule, thinks it has constitutional issues, or thinks it is uncessary. It just said no.
As of now, only Vermont has adopted the rule.
Thanks to Patricia Sallen for the update.