hmmm....if I was directly overhead the departure aerodrome and on the correct heading, I would certainly be on track, seeing as track by definition starts at the ARP (unless it's a navaid I'm tracking from)!
3.11 just says that you can be lower than LSALT during takeoff and climb etc.
My problem with the issue is that it seems ridiculous that I could overfly the airfield enroute and descend to a lower height than I would have to maintain if departing - just doesn't make sense.
Anyhow I guess we will have to agree to disagree on the point.