@frappe: Are you sure? I was under the impression that directly after having completed ADFA, cadets were awarded the rank of FLGOFF (pre employment training), and DEO were awarded the rank of PLTOFF having completed OTS. I have also heard that degree qualified DEO candidates who graduate OTS are awarded a FLGOFF rank.
Happy to be corrected as I can't find where I read this, and may be outdated, but this was certainly the impression I got after my conversation with a FLTLT last week.