One of the best folding spades I´ve ever used is the one from the Austrian company GLOCK! It has a very usefull sawblade hidden in the handle and if you unscrew the end ring it come apart - then turn it around and screw it on again! This saw is awesome and the spade also it´s a one piece steel shovel which is hardened and you can lock it in several positions!
Give it a look mate!
all the best
Mike