I have a Laney VH100R with a Mac Amplification 2x12 (which we suspect is made by matamp)
No problems, and if i hadn't had this cab already i'd be getting a black-tolex Orange 2x12 instead, as they're apparently awesome and i love the look.
Some manufacturers make great amps, but fall short on the speaker cabinet side of things, there is no shame in using a mixed brand head & cab setup.
It only really matters if your endorsed!