I'm playing a male High Elf, and currently have houses in Whiterun, Riften, and Solitude. All of my Housecarls are female. Additionally, I've noticed that most of the Jarls' Housecarls are also of the opposite gender. (I believe I saw one male/male Jarl/Housecarl pairing, but I can't recall who or where.)
Is this generally the standard? If I play a female character, will my Housecarls be male?