I have one & its great for what it is, yes it will cut matboard but the blade is straight down so you wont get a bevel.
I have cut leather up to 2mm thick & 11inch wide, - handy for doing tricky filigree work
I use the engrave function to score out small areas for tooling as my tracing skill is "limited"
I have a maker 2 model which is slightly slower & has a slightly reduced width on vinyl products to cut.
I use the engrave function on copper foil for accents in leather projects.
For solely use in leather craft it is limited, but if you do other craft too (card, fabric, vinyl) then its a great little tool