LOL!
I saw this post just now after only yesterday seeing two old guy use one in the gym for the first time I have seen one in over 20 years. These two old guys were using one all herky jerky with waaaay to much weight doing cable curls. First thing I noticed was one had a pretty obvious bicep tear and then noticed the other cat had BILATERAL tears. The Arm Blaster is probably unrelated to this but still gives me pause.
How much crap does one really want to carry to and from the gym with him anyway? I saw a guy with a 5 kilo tub of weight gainer in his bag on the gym floor. Hell, I hate carrying around 1.5 liters of water and a fairly empty gym bag.