All the video demos I've seen on youtube make it sound great. It definitely sounds like an 'older' Marshall flavour - which if you ask me, is where Marshall amps really shine. but you need to crank em - and at 20w this is doable

They're not made in the UK, but that probably doesn't matter much any more. The attractive thing about the Origin 20 to me is (in combo format) its super portable and becomes a Marshall version of a Blues Jr. It doesn't have reverb, but the EQ controls and gain/MV make it quite an attractive product. I like reverb in my Fenders and good gain structure/controls in my Marshalls.
If you get one, please post a review and some sound clips (without effects)!