Really strong Army students have also been offered fast jet.
No they haven't. Army doesn't go to 2FTS, and their skills are never assesed by RAAF to the level required to offer a chance at the pointy jets.
To answer the original question, yes, quite a few have been. Recently though comitting to jet conversion post 2FTS for RAN members has resulted in an immediate service transfer, as opposed to members remaining as RAN till later after conversion. If you take a run at jets, don't expect to go back to Albatross to fly rotary.