I usually don't review anything, but since there were no reviews I'm going to do a quickie now. It's the MDA freebie that I use the most. Soft distortion is great (not to say hard dist isn't cool too) and some amp sims have great sound aswell. It's not a full blown amp sim nor it's supposed to be, I see it as a great overdrive/harder exciter. For that job it's great.
I rated the UI 8 despite it's got no GUI, because with small number of parameters it has it's no problem using it in any host. Also, it is pretty featureless compared to big commercial plugins BUT it can be used for a lot of things (stereo to mono, excitation, amp sim, distortion and combinations) and with a lot of sounds. Due to this it's very fast to work with once you know where and how to use it.
Docs are short but decent for all MDA plugs, but combo is so simple it'd be ok if it didn't have any. It doesen't have built in presets but with a simple and application specific plugin like this there is no use for presets.