Yes we have. They're just the regular Shi'a ie those in Iraq & Iran and some parts of the Asian sub-continent. IraqiAtheist was one, Al-Razi was another - also the mod who used the nickname Irene (Or something like that) was another - there have been lots tbh
I didn't know that. I knew all those posters were ex-Shia but I thought Twelvers were something different. Well, you live and learn.