I also have alters that are male. Not many though. I wouldn't think it is rare to have opposite gendered alters, in all of the people I know with DID (not many, admittedly!) they all have at least one opposite gendered alter. Most in psychology literature I have read about seem to have as well. I would think it would be rarer not to!

I personally need to see a female T at the moment but I would like to see a male T eventually as I think it will be an important part of my healing.