I don't have one yet ( probably will ) , so I can't comment on the quality of the two items. That is always a concern with "as seen on TV" items. When this first came on the scene via Billy Mays ( RIP ) I sized it up as another ginsu knife. But I said the same thing about the vibrating multi=tools, which most tradesment wouldn't be without these days.
The one thing I question about the dual saw is the one-blade-cuts-all. I would think that if this was to be an every day tool, you would want maybe a finer tooth blade for sheet metal, coarser tooth for plywood, etc. BUT, maybe the whole point of the dual blade is that such differentiation is un-necessary.
Please give your tool a workout when you get it ....and report back!!!!!