I went both ways. One of my girls with one male only. The other two got both males because I wasn't sure if one of the males was getting the job done....... Ya' do what ya gotta!
Thats exactly what I had to do this season. My enchi male seemed to have no interest in my spider female. Or may he's a regular two pump chump and I missed the lock...guess we'll find out. But thats the fun part!