The Manfrotto SYMPLA Fig Rig Version lets you walk around and make quick and wide movements, holding the rig as a steering wheel with a camera mounted near its lower center.
SYMPLA's Universal Mount is attached by a 3/8" screw to that center and can take on standard-size 15mm rods (and anything else attached to them). If you'd like, you can remove the Mount and attach a camera plate in its stead.
The crossbar that the center is located on additionally features two more 3/8" screw-holes and one 1/4"-20 screw-hole for mounting compatible accessories. (The crossbar also has six holes across it that are each about a half inch in diameter.)