The four friends were a big disappointment in Gothic 3, not least because none of them had their old armour anymore, although these had become a part of their characters.
Of course, others have worked on this problem before and gave Diego his old armour back.
It is a really good piece of work, but it was created in a time when the tools of modding Gothic 3 were quite limited. With all the new possibilities we have now, we just had to make our own new version of Diego’s armour.
(Work on this armour is, quite obviously, still in progress.)