My plan is to go for an all weather tire option, no swapping over BS every 6 months. That is if I can find them in 20". Largest I have found so far are the 19" WRG3 which is my favourite AW tire.
I've already ordered them. There are two WRG3 lines, one for passenger cars and the WRG3 SUV line. The latter has sizes to fit the Model X's 20 wheels and width's to replicate the OE staggered setup.