Confused...yup I am now. My understanding was that P1/S was only to be used after a (passed) test with an examiner, not a rental checkout. Unless I have misunderstood the postings both Noggin and Beagle appear to be saying that it is also fine for a club checkout too.
GID 44 seems to support my initial view, unless you are a co-pilot which I take to be applicable only to multi-crew aeroplanes (As defined by JAR-OPS).