i should be getting my Germ with exp input very soon, Josh was horified when he discovered my original Silicon model wasnt functioning properly (weird clean boost when both switches to the right - he said it sounded like crap and that he was personally shocked that it was even sent out), i thought it sounded great tho, and as a goodwill gesture he's sending me the germ model with exp input.
now the pedal is expensive, and anyone who says otherwise must be tripping balls. in fact i was gonna sell my original B:assmaster coz its so expensive and i was scared about bringing it to gigs and it getting nicked, but to be honest i like the sound so much id rather get rid of all my 'non-essential' pedals (ie most of them) and just keep the B:assmaster, and now im getting the germ one i just sit and wait for the postman everyday
as for the use of the exp. id say its probably definitely worth it

as i havent tried it yet i cant really tell, but with high sens on my old one, playing gently yielded the really aggressive octavia sound that cuts like a knife and digging in rounded the sound off a little more, less upper octave. while this adaptablility to playing dynamics is really cool, sometimes i dont want to play gently when i want the octave sound, and im no jaco, my dynamics arent always that pronounced, i just play hard alot of the time so the exp sounds like a really good idea.