Okay it’s my own fault for not reading. I went ahead and purchased an Adaptive Services PIC and a Tunnel Services PIC for my lab M10. Turns out the Adaptive Services PIC needs an Enhanced FPC which the M10 doesn’t have, so I can’t use it.
The Tunnel Services PIC is supported, but the feature I specifically needed, logical tunnels, is again only supported on M routers with an Enhanced FPC. Out of interest you can only get an Enhanced FPC on M20s and above.
So, I’ve put them up for sale on ebay. If you know anyone who needs either of these please direct them to this ebay page