Toadpool. Where I work we have traffic outside CAS all the time on ORCAM/CCAM squawks. Although the unit itself has a specific block of conspicuity codes there are only enough to assign two to each sector. In general we reserve these for freecallers who want a radar service outside CAS. On some sectors it wouldn't be uncommon to have quite a few outside CAS on the ORCAM squawks. Also,as has been mentioned,we lose our code callsign conversion if we take it off the ORCAM code. Hope this helps.