I did a flight test for a magazine with one of Mathews' aircraft. It was a nice enough aircraft with good handling, comfortable cockpit and efficient in the cruise. Unfortunately, like so many micro lights, the empty weight from memory of 265kg was only achieved with a stripped out cockpit. By the time a reasonable instrument/radio fit was put in, full fuel could only be carried solo. With two up, you were severely restricted on fueL
I believe Mathew intended to go for UK certification, but the hassle factor put him off.