OBO Elbow Guards - a great alternative to the Robo Arm Guards for those looking for more mobility.  In size Large only but can be used by those currently using Medium arm guards. (NOT recommended for those using small arm guards!) 

In a nut shell: Why use elbow guards?  Increased mobility.  Why use Arm Guards? Extra protection but a bit less mobile.  Why use either?  Their your arms - you want to be able to use them the rest of your life?