Unless MSI makes a monumental blunder and prematurely discontinues them, forcing agencies to other manufacturers, which I suppose is always a possibility.
They did it here when they discontinued any and all support on the XTS/XTL radios; most of my customers made a beeline for Harris and Tait.
The APX Next is going to be a disaster IMHO. Check out some of the Youtube videos of the boot time for the radio. I believe the radio is Android based, and it literally takes as long as an Android cell phone to boot up before it's fully functional. That's just not going to fly with officers who grab one out of the charger and want to head off to duty. They might be good for some EMA manager or whatever, but for the patrol officers that thing is going to be a mess if a department deploys them to the masses.
I may get an APXNext all-band for testing and so on, but if you have to go to the touchscreen to do much of anything it's going to be el floppo around here. And don't get me started on VIQI.... with our current radios I can't get 99% of our personnel to remember anything other than the name of the dispatch channel, let alone zone names and what is in each zone. I can just imagine one of them saying "VIQI switch to Zone XX" (it being the wrong zone) and then trying to say "VIQI go to Channel XXX". Won't work, they get ticked off and have to haul the radio out of the holster, manually scroll to the desired zone, and manually switch to the desired channel. Won't fly.
And ditto on boot time for the KVL5000; it's Android based, takes forever and 8 days to boot up. If the APXNext is anything like that, it will be a massive PITA.