No, it IS true if you have the right style connector. The pinout of the UDC is the same as its physical configuration.
The limiting factor is the shape of the connector shell. If it's made for a Jaguar, it won't fit an M-RK or LPE well, but if it's made for an M-RK or LPE, it'll be no problem to mate it up to a Jaguar.
Elroy