Dig or not, this is all about the NPAS model [and it did not exist when they made that choice] - about having to be 'all the same' eventually.
Fragmented purchasing, a very real part of the current arrangement, is undertaken by every force except for the recent EC135P2 deliveries... you may recall many of the differences.... a handful of aircraft types.... North Wales uniquely having a set up that reversed the orbit everyone else did ...... different maps.... some analogue downlinks... some digital... different cameras.... mapping .... some buying leather jackets others not... it goes on and on...
Just look at the colour schemes.... and how many cried when they were forced into blue and yellow and how many 'got around it' by having a large lump of yellow or a small lump... checker squares on the tail.... a fin in yellow.... anything... They are all going to be the boring old same.
Well all that will [I think we all assume] go. But sorting the difference in short order will surely cost a great deal of money and eat into that claim of savings as sure as night follows day.