You asked about getting a highlander one in a previous thread, now this one? Why not just go get a bog standard issue one, I mean your a cadet for fcuk sake, why the need to be different?
As for buying a brand new GS bergen in dpm, you might want to know that it doesn't officially exist (at least to my knowledge). In the 80s there was a GS bergen that had one pouch on the front, two on the sides, and it was mounted on a frame, but it was never made in DPM, and I doubt you'd find a brand new one. Basically, it was a smaller version of the para bergen, which looked identical. If you have pictures of what your on about, then put them up.