Squakvfr - I invite you or your students to come and do a JAA Commercial/FI with us before you comment, since you only have FAA Licences.
Also suggest you plan on more than training as required.
After this exchange I fully understood that bigoted attitudes like his -as opposed to logic- are the REAL reason that and FAA certificate isn't accepted in certain parts of the world.
Unfortunately, and I hate to say it, basically due to horrendous lack of standardisation amongst DPEs, and a resulting very low standard of airmanship,
which I consistently see demonstrated by FAA commercial pilots ....