If this was a C550 I find it interesting how people manage to do RNAV procedures. When I researched the process some time ago it did not matter what FMS CDU was fitted to the aircraft the Primus 1000 was not capable of displaying sufficient information to be RNP1 compliant. Something to do with the display screen drivers and screen capability. This might be why Cessna quickly upgraded the XLS to Primus 2000 and beyond and why Bombardier upgraded the LR45 to the 75 which is a 45 with Garmin screens.
I do wonder?