Tried the demo - absolutely great! - what's kept me away from most IR packs is too many files to wade thru (I've only been getting the Celestion ones because they keep the number of files fairly reasonable and intuitive to sort through). Even the stock Axe3 cabs, though well organized and tag-able, I find too numerous for easy selection and not obvious wrt mic positions / mix content (pretty well impossible to provide all this in a file naming standard).
Mikko solves all of this. I was able to get a cab sound I like in 5 minutes - I'm sure it selected 100 mic/mic position files in the background based on the selecting / moving around I did in that 5 minutes - would have taken me an hour the old way and I would have lost interest 1/2 way thru.
Awesome.
Just be careful MB does not come after you about that logo