Reminds me of a chippie (built like a brick outhouse) I knew who would regularly rip short (200 - 300 mm long) pieces of jarrah floorboard in half as follows. Jam the guard open on the circular, flip the saw on its back and hold it in mid-air with his left hand and fire it up and pass the bit of wood through with the other hand all while holding an in-depth conversation. (err . . . . come to think of it, none of his converstations were ever what you would call in-depth)
He also cut some door and window architrave mitres this way. he claimed he could see what he was doing better and treated it all as a bit of a juggling act. Miraculously I understand he still has all his bits and pieces!