I actually had one of the original Kramer Axe "guitars" that Gene commissioned along with the basses. I sold it because I was hard up for cash at the time, and you are right, it was impossible to play sitting down...also with the aluminum neck, it neck dove pretty bad.
I still have the original Dimarzio pup (I may have put EMG's in it), but I wish I still had the guitar.
Not my pic, but it looked exactly like this including the signature and numbers:
Before it came into my possession, I called the Kramer factory and verified the serial and sig. The only other one they knew of at the time (1988) was owned by Rick Neilson of Cheap Trick. They had cancelled production due to a fire at the factory.
I say it "came into my possession" because I didn't actually buy it. I had won some kind of contest outta dumb luck at a Belks dept store, and won $5000 worth of jewelry...not much of a jewelry guy, so I went to the music store in Macon Ga and talked to the owner and said "how do you like my watch( it still had a $500 price tag on it)? I'll give it to you for that guitar". He said sure, no body liked Kiss any more and he would never be able to sell that thing, lol.
I bet I'm not the only one regretting letting that guitar go.