It's NOT a guitar, it is a 6 string bass, tuned like a guitar but an octave lower. The EADG strings are exactly the same as on a 4 string bass. Jack Bruce used one the first two Cream albums (Fender Bass VI on the first one and Danelectro bass VI on the second).
It is a bass, not a guitar. 30" scale.
I bought one of these several years ago, the first edition, black, loved it, had a pickguard cut for a SD replacement bridge pickup. It was stolen from my home on my birthday 4 years ago. So I found a used one, and bought it, haven't changed anything on it. It works well as a bass... through a bass amp. And it's pretty cool as a lead instrument, though the sound is quite different from a Fender Bass VI, when played through a guitar amp.
My two cents worth - It is of course a short scale six string bass, technically. But I like to point out to people that bass is bass, and guitar is guitar... Bass guitar is bass GUITAR. I have had many discussions on this subject, and the way I see it there's no need fuss. ALL Bass guitars are guitars. It's the design of the instrument.
The tuba is a bass, as are bass saxophones, and stand up basses (bass fiddles). All guitars are guitars, no matter their range... All instruments that are in the lowest range are bass instruments.
I would ask, what does it sound like? If you play bass parts on the lowest strings, through a bass amp, even with accent chords, it serves as a fine bass. I play one exclusively live in one of my bands, and record with it as a bass on some songs in all my bands, it has some really cool tonal options.
When I want to use it as a lead instrument, I consider it more like a "baritone guitar", and played through my Bassman Ten there's no doubt it's an electric guitar, one that goes low, so, bass.
If you want a classic, 60's sound, I would use a Fender or Danelectro, but the Hellcat VI is very versatile. My main complaint is that I have to detune the low E, otherwise it goes sharp, and the intonation seems to be as good as it's going to get. The floppy bottom end doesn't help in this regard, when I push down hard on the E and A strings, but that's also part of it's charm, you can bend the crap out of them, where as the high strings are hard to bend.
I hope I will have this instrument until I am no longer able to play. I really dig it.