This interesting position occurred. Black doubled and white took a good 10 minutes to decide, even though there seems to be symmetry, his position is about to collapse. (Note, the bottom of the picture is white's inner board.) The best white could hope for was to be hit and fail to enter, or have black break even faster than him. Not very appealing.

A member with a bot analysed the position and wrote this:

"At a 2-to-3 score up to 9, Black the trailer should double and White the leader should drop.  It is a substantial blunder to take, about 1/8 th point per normalized game.  Both the XG evaluation player and a moderate number of  live cube rollouts (2500) agree on this equity difference."