I stupidly did the Post-9/11 GI Bill Transfer about a year ago, then 6 months ago my unicorn of a dream AGR job (same AFSC) unexpectedly opened up. Applied and got the job. Applied for PC on 1 May with a Jan 2020 DOS (2 years, 6 months before ADSC end). My app is just now leaving for SAF (30 Jul). Sq/CC & Wg/CC both recommended approval. AFPC denied based on my being a Weapons Officer (ADSC will be complete prior to separation), an ABM (career field is undermanned but my ADSC was complete for that 5 years ago), and an instructor (ADSC complete 3 years ago). Still trying to figure out how they can use qualifications for which you've already completed the ADSC against you, but hopefully the SAF board will see through that. The Post-9/11 GI Bill Transfer is the only ADSC I'll have left at the DOS. Am I missing some clause whereby your AFSC, instructor status, etc. can be indefinitely paired with another AFSC like the Post-9/11 GI Bill Transfer to keep you in? I got it, I'm asking for 2 years and 6 months, but the VEB AFI makes it clear that the service on AGR status is equivalent. The comment train on AFPC also mentions greater than 6 months being too long, but I don't see anywhere in the AFI that dictates that. All I see is that you have to have completed 2/3 of your initial ADSC.
I'll post updates here, as I know I've drawn hope (and at times, despair) from those who have shared their stories here.