I think you are still okay buying another scanner at this point. I think you would still get a few good years out of it before you will see any mass migration to any type of encryption. I'll put it like this, I would buy one if I had the cash lying around.
By the way, the Beaufort system is not Phase 2. All of the P25 systems in SC are Phase 1 today. The standard encryption protocol on the Palmetto 800 4.1 is DES-XL. Most of the encryption on P25 is DES-OFB, although all of the newer Motorola radios (APX) generally come standard with ADP which is software based encryption which only works on the 9600 baud networks. AES-256 will likely become more prevalent in the future because of the enhanced security of that protocol. None of the protocols mentioned, hardware or software, can be monitored by a standard scanner.
Trunktracker71 is correct in saying that most of the agencies in SC use "clear" non-encrypted traffic whether on 4.1 or the P25 7.X platforms. However, I suspect that more of that will change as the Motorola P25 radios have ADP available in them at no extra charge (or nearly no cost).
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