I tried them and while you can turn them off for overall deviations, you cannot do so on the message summaries. Where I used to be able to see a new message or deviation with a single click, it now takes two. Not happy.
Total shit IMO. If you watch over 1000 people and get 100-150 deviations a day this shit is unacceptable. I view maybe 20-30% of the deviations I get and I like to sort through them by quality, not by who or when they were made. This slows down the process and groups together mediocre and awesome stuff from the same artist as if they were the same.