There are keys for angle:
%ar = Angle in degrees according to the rotator (#.#)
%as = Angle in degrees relative to the sky (#.#)
There is not a key for Pier Side.
That is correct. Angles in SGP are sky angle since that is what will be used for mosaics and framing. SGP holds an internal offset from the Sky Angle to your rotator's actual angle so there is no need to have them match up perfectly (or even close) unless you want that behavior. SGP does need to have a solve and sync initiated before the offset is stored.
Thanks,
Jared