I am butch/genderqueer and I prefer when either partner initiates sex.
I will try to initiate sex when I'm turned on, but I would start to question my desirability and appeal to my partner if I was the one to initiate every time. There isn't much sexier to me than a hot femme showing me how much she wants me. At the same time, I have my moments where I am feeling devilish and scandalous beyond words and want to completely ravage my partner. So, both people initiating just makes sense.