Robotic exoskeletons give dock workers superhuman lifting abilities

Some years ago, watching anime movies like “Ghost in the Shells” and the like, I dreamt I could be in one of those exoskeletons or even mech warriors… well… we are getting closer.

I think we need more advancements in key elements like battery/energy storage, computing power (check the new IBM neural chip that is a paradigm shift) and lightweight but very strong materials.

http://o.aolcdn.com/hss/storage/midas/80059bc3d21658682cc524bf945e7829/200526933/daewoo-robot-exoskeleton.jpg

http://www.engadget.com/2014/08/04/daewoo-robotic-exoskeletons/

What do you think?
Are we close to getting a viable exoskeleton?
Will we see workers with exoskeletons in the next 4 years?