The biggest advantage to my DIY solution, IMO, is the ease with which one can handle the camera on a dive boat. The grab point on the top of the bar is easy for the crew to hold when passing the rig up and down from the boat or dive platform. No grabbing of the strobe arms or housing/handles.
Plus it's a fraction of the cost of the cost of a retail unit. It cost me about $5 USD and most of that was for the SS bolts and machine screws.
Just my 2 psi.