The trials are quite promising. What was originally intended to be used within 350mtrs of the DPU is seeing results at 450mtrs+. Alas, I don't have access to what these D-sides are 'made up' of, but it can only be good news.
Far from being a 'PR move', it is a reality. Anyone can mock, deride, scoff .............. it's very easy, but very negative and really doesn't serve any purpose.
I prefer to see what transpires in actuality, rather than make decisions based upon the thoughts of forum members.