From my limited recollection of MEPS/DODMERB physicals, they are the LAST place you should ask about waiverable things. They are more a mass screening action than a group that's actually concerned about your welfare. Like pretty much everything else in the military, if you want the right answer, go searching for it yourself. Call NAMI/NOMI, read pubs that talk about medical waivers. If you feel comfortable putting your future in the hands of some random doctor, go right ahead, but I don't recommend it.