How hard the S&S coupled bike is to pack depends in part on how large it is.
Most of the time I can disassemble and pack my 62 cm (about as big as will fit into the standard 26x26x10" case) in an hour. Sometimes, it just doesn't want to fit. After an hour and a half I've been known to give up and put the saddle and seatpost in my clothes bag.
OTOH, I've watched other people pack their 48-54 cm bikes in awe. They don't have to take everything apart! And there's still room in the case when they're done!