If training in the US.....
NAC students complete the ME CPL in one skill test with an Examiner in the US. The amount of training is at the discretion of the Head of Training, normally assessed based on currency/experience/after first flight.
For the IR, our students return to a JAA Member State (we use schools in the UK and Ireland); most complete in 15-18 hours (min. required is 15 hours based on holding an FAA IR).