Emer / Eimear ("EE-mer") is one of my favorite Irish girl's names. So Emmer on a boy won't work for me, sorry.But I do love Emmet and Emeric ("EM-er-ic") for a boy.
DittoIt's too similar to Emer / Eimear, so it seems feminine to me.Although I don't particularly like Emmet or Emeric. I like Emery though, and love Emrys.