That would be very incorrect. Most finish their career in their career ie EM. It would be virtually impossible to practice as an FP with EM training especially if one did EM solely for say 15-30 years and THEN went back to FP. The whole field would have changed 3 times over by that time. INcluding every preventive guidelines, HTN meds, diabetes management etc...NONE OF WHICH EM DOES. (thank goodness)
I'm sure foughtfyr will be here soon to elaborate.
later