Darlene Parsons and/or Wanda Martin at The Wartburg Watch are deep into it over complementarian commander-in-chief John Piper. In an article entitled “John Piper Backs Himself Into a Corner and Even Reformed Complementarians Are Confused”, TWW points out that Piper has well gone well beyond any biblical mandate he might have for his views on the roles of the sexes.
If you have no idea what a complementarian is in the first place, join the club. Large numbers of Christians have never encountered the term. Though the idea has apparently been around for years, I only heard it used for the first time very recently.