I didn't until today. I was watching his weekly article/video and noticed the familiar red Shopsmith logo flash across the screen as Matthias briefly touched up a workpiece on his Magna Shopsmith belt sander. It looked like he was running it from a Power Station. I have no idea if he owns a full Mk 5 (or 7, or V, or VII) or not. I've never seen one in the background of pictures and videos.
Imagine the things his creativity would come up with along the lines of jigs and shop-built SPT's if he was turned wholly to the dark side. "A powerful ally, he would be."
We should each write him an e-mail today telling him we noticed his SS belt sander, and encouraging him to look into a Mk 5/7/V/VII. One of our Canadian bretheren in the Ottawa area should invite him over for a personal demo. Matthias could do one of his weekly articles/videos of it. He reaches a pretty large audience every week.