Yes... pilots can get a single pilot sign off for the Encore (although it is officially a two pilot aircraft). To get the sign off, you have to do the special simulator course and then take a checkride in the actual aircraft. It also requires single pilot recurrent (sim only) each year to remain valid.
Going for a new capacity record today... 7 male passengers, 9 overnight bags, 7 sets of golf clubs and 860NM legs westbound...