I played one today. A long-scale model. It needs some work (better fret dressing etc.), but it's a nice bass and it makes a sound I can use.
It's heavy - probably 9+ lbs. - but the upside is less neck-dive than you'd expect. Actually it was quite comfortable to play with a wide strap.
The sound was surprisingly nice. fatter than a bridge-position J but not muddy, and still punchy enough without being clanky. A very usable sound if you're into sweetspot-type tone.
The pickup looks like a cheap unit, the polepieces don't line under the strings, and it's not grounded very well, there is an audible pop when a finger touches the metal cover.