Well, paid the charge & picked it up, replaced the RT on my board with it, and went straight to practise. I think it's going to be a permanent addition to my board.
First of all, this pedal looks amazing.
The sound of it is huge. The controls are very intuitive, the volume on top doesn't bother me but I can see how it would for some, but the bass/gain/treble knobs interact well, and make it easy to dial in. It's easy to get the punch of my clean tone, the low end retention, and the 'snap' of the Rat sound, as the store page puts it, and I had a spot on sound within 15 minutes or so.
It 'sat in the mix' and 'cut through', as the cliches go, and just filled the space around the guitar and drums. I was expecting to have it very low gain, but kept bumping the distortion up, just because it sounded so good (probably ended up a little past noon).
I usually ran my RT with a BDPG to thicken it up & retain the low end, but the Blower did not need it. However, kicking the Broke Dick on after it seemed to add a bit more punch and a small volume & grind boost, so I just used it as flavour for solo parts & big moments in the set. Looking forward to dialling those pedals in together more as time goes on. I didn't get a good (or very different) sound running a Demon into it, but I made no effort to adjust the Fuzzrocious, so that could come with time. I'm thinking the BB will be the only distortion I'll need, using the BDPG in that way.
Gigging with it on Saturday, and I'll know more then, but this pedal is a keeper, and amazing value for the price. Grab one ASAP, if you're into the Rat sound at all.