oh, im not in primary care yet. im doing a residency in another specialty and currently switching to FM. At the latter end of my internship, however, two of my attendings offered me jobs like taking call or covering while on vacation as long as I got my license. You can get pretty good at the end of the year and may well convince folks where you are applying that you have current primary care experience and credential you as a primary care provider/GP in addition to your ED appointment (make sense, right?). TY year at an FM program would probably be ideal (added OB and peds exposure) but many of them are super hard to get, even I had trouble and ended up in a prelim IM and my stats were decent (>240, >250 steps, upper quartile, honors in core clerkships...) because I was literally competing with the derm, rad onc folks during my interviews.
funny, I am actually interested in urgent care, ED work in the future for a short time and only part-time which is why I chose FM over EM. ill either do that EM fellowship if needed or do a bunch of ED/ICU/trauma electives + ATLS/APLS/NRP/ALSO.