Good point. Due to the recent changes WRT annuitants, various log/admin NCO cl B positions have been popping up across the country for someone looking for a nice easy sunset posting. There are also many opportunities for junior officers as the CIC can use the RegF/PRes skills you may bring. I wish everyone was aware of this, especially those who have had to release due to circumstances beyond their control (injuries, etc), as it is a way to stay in, even if it is cl A or cl B days.
The only limitation about transferring to COATS is you cannot be promoted, other than WSE for summer training or other opportunities. So if you don't want to be a private (or paid as a private) for ever, this may not be the best route. Senior officers may be able to transfer, but may not always be able to find a paid position somewhere, and will probably be encouraged to re-badge CIC, take a reduction in rank (to Capt), and wait/compete for a senior officer gig.