WCollins
(As you ask ..... yes I was female, last time I looked

)
Under the "joys of JAR" I have now done 3 MEP revalidation proficiency tests (if that is the correct JARspeak

).
All 3 tests were on GA7s, & on all 3 tests I was asked (at a safe height) to do a full close down & then a restart.
Just a thought though
GA7s are relatively simple & low powered, so ideal for training, as they are easy to fly on 1 engine, & easy to restart.
With some of the more high powered twins, especially those with turbo-chargers, is it advisable to close down an engine in flight, just for training purposes? Or would this cause unacceptable wear/stress to that engine? Or are they more difficult to restart?