I do plan to play a drow that follows more or less Vhaeraun. I have reached to the conclusion that playing a Lolth-sworn drow and avoiding the Lolth related dialogues is good enough of a compromise. Of course, it would have been great if we had Vhaeraun specific dialogue options but that would be too much to demand. It is a huge game after all and they need to manage their resources accordingly.