bump on the question about the segger programming shield.
Also, I'm curious whether it would be possible to flash the code through the rfduino bootloader? It seems like it should be possible to compile a custom app with the nordic SoftDevices, etc. but then flash it with the bootloader over serial. I suppose the limitations would be that you'd need to use the same compiler as the rfduino IDE and maybe futz with the linker settings to make sure things get offset correctly.