I'd dare say there's all sorts of jigs that could be developed...

I'd dare say there's all sorts of jigs that could be developed to move bricks across at height safely. There are so many subsidiary problems that emerge with HX that will require resolving during mainstream implementation, all of them probably easily resolved. One obvious matter I've commented on before is applying higher strength floor leveller along sections of the build footprint to pre-lasered tell tails, just needs a simple 2 to 3 cm dam any unskilled labourer could lay down. Maybe there are other ways to address the very level slab/surface required.