No doubt you've heard this angle before.
Police are on the public payroll. We as citizens have every right to know what our public servants are doing in the performance of their duties except in the rare cases where there is a compelling need to keep communications secret for a long enough period of time that a developing tactical situation will not be compromised by disclosure of that information.
Routine traffic should not be encrypted and I firmly oppose the usage of encryption by public safety as a matter of routine. It should only be for very sensitive data and tactical situations.
I've made my sentiments clear to a few public officials, most of whom agreed with me. If more people would do this, it's very possible that some departments might bow to pressure and go back to clear communications for routine operations.
But it'll never happen if you don't make your voice heard.
As for OpenSky (openscam), its historical background is that it was created by AMP Wireless Systems as a data network for FedEx. It was intended to carry package tracking data, not voice, and it did admirably well in its original application. It was never originally designed for voice comms and I have yet to hear comments from a daily OpenSky system user who had much positive to say about it.
P25 may not be perfect but all OpenSky systems should be changed over to P25.
What we should REALLY be looking at is TeTRA. It's mature, modern, highly developed, and highly reliable. Why we don't have it in the US is a mystery to me.