Every reservist pilot has to pass a PFT (RSG excepted - however no pilot flying positions in the RSG) and has always had to.
It is a requirement to maintain an annual aircrew medical.
As to some of the other aspects discussed on this thread - some of them are a bit dated.
There are in effect no "operational" reservists posted to the reserve squadrons such as 21, 22 et. al any more. The reservists are posted to the operational (or training as the case may be) squadrons utilising their skills - this squadron then wears the admin burden of the reservist - bar the pay requirement which is still handled by the reserve squadron.
They still have to maintain all operational requirements such as the PFT and WHT - no difference to that required by a PAF pilot.
There is some move to reduce these requirements if the reservist is just conducting sims and the like.
RSG days are dead - but I always thought that a particular reservist was posted in as RSG - not a "general" pool of days to be used as required - could be wrong though having never done it.
CSD - what happened to your South African laterals??? 457 visas fall through??