If you can drive the Recce Sgt's vehicle (LAV III for mechanized reg force, and typically LSVW or Iltis in the reserves) then you can do the job. The old QL5a course used to qualify a Cpl to assist a recce sgt (and so it would have been a prerequisite for the recce driver). However, the Section 2ic course that replaced it no longer goes into the required details.