On second thoughts, even if the 'grid' was a nifty trick it only saves a few minutes and defeats the purpose of the seams. It is important to have seams at the top and bottom on the arm. But even more important is that topogun does not keep the material zones. Redoing the UV maps is no great matter with a lowpoly mesh true, but then comes the retextureing. The texturing takes more time than all the other steps together. In C4D I can create the UV maps with a single mouse click if the zones are intact, a single click for each material that is. And then I can use the same texture maps with just some minor tweaking.. When I get more time I will make an video and show the whole process  how to distribute packages that are both  dynamic and conforming at the same time.