Interesting thread. I too have printed a model onto high gloss card stock; I wanted the model to have a very sharp print.
The major difficulty I have found is indeed the folding. All the folds have to be carried from the non-printed side and it is a fine line between a suitable fold/crease and cutting through. I've found that this needn't be a disaster because the card stock is quite thick and it is possible to abut edges without tabs if you do cut clean through.
On the glue front I've found that a really sticky 'tacky' glue works well but glue both sides and let them dry out slightly then press together and hold. It works for me. However in order to get the pressure on both sides you might need to re-work the order of the construction to ensure you can get a grip, so to speak. Where necessary I've used super glue but only on the glossy side - it doesn't soak in.
Hope this helps.