Or maybe as an American company trying to make a one size fits all logbook they may have got it wrong and confused things? My FAA logbook has the SPIC entry, but then in FAA land you can have 2 P1's in a single pilot aircraft......
That is what a thought at first when I saw it (I remember having long argument with a FAA instructor on why the concept of having two P1s was silly) but it just seems a far too basic mistake to make when you consider that Jeppesen sell a completely different logbook which is 'FAA compliant'.
It doesn't really matter because I've never used the SPIC entry and have just continued to log as I was told originally: P1, P U/T and P1 U/S (for completion of a flight test).