I think it would be a great addition to those pedals.
Personal likes/dislikes.....
There's some good chorus, phasers, flangers, delays and reverbs. The pitch shift is ace.
I found some useful boosts but overall didn't get on great with the distortions. Tho the octaver is ok - it's not an oc2, and not synth you at all. The Sub octave fuzz is pretty good.
I can't get much out of a lot of the filters, but I think there maybe some good lfo type stuff in there - need to tinker more.
I got rid of a Pog, Organizer, Nimbus and Muff to fit it on the board - and so far so good. Not lost anything - and gained loads.
I'd advise adding an expression pedal to get the best out of it.
Oh - and John Davis has one on his board ;-)
If you do sell up - I'd like first dibs on the Fatman!!!!
Cheers.