First impressions:
The Alien is much louder, acoustically, than the Kingman I have. Still not really that loud, but noticeably different.
Played using the soundhole as a thumb rest, it sounds really quite upright-like, but this doesn't translate that well into amplified sound. However, the Prefix Plus system needs some fiddling time, so I may yet improve on that.
The long thumb rest is positioned about as far from the strings as a Precision bass pickup cover would be, which for me is too far out. I'll see if Warwick can advise on removing it.
Out of the box, the setup was really nice. It has the Just-A-Nut III, so everything can be fettled really nicely.
The neck is a nice round handful without being in any way a baseball bat. fretwork is excellent.
Now, back to playing it!