The variant is playable in FICS as wild/0. As far as i know, it is not possible in ICC.
My favourite wild variant is, however, wild/1. Which has the two royals setup randomly on the e and d files. The Rooks always in the corners, and the bishops and knights and randomized, provided that bishops start on different colors. Black's setup needs not mirror white's. Castling is done by moving the king two squares to either side. Short castling is o-o, Long castling is o-o-o.