Seems a difficult item to get hold of. I don't expect to be able to get one through the system but the surplus places don't seem to have them. One or two places have got one size in stock but it seems like it's not so common as it was. Then again not many folks liked them!
Never got issued proper trainers first time round. Had my own Hi Tecs but we rarely wore them as everything was done in boots. Never ran in daps.
I did like the idea of the black daps for sleeping in or for river crossings etc. although I don't recall using them very often. I recently bought a pair of lightweight wetsuit boots which I think will do that job well, for when you need to get your boots off for a bit.