I have had this one for a few years...

...and have the following experience...
1: about the easiest PSG in existence to work on mechanically.
2: light but more than stable enough - that mine is an SD10 may play a role for stability.
3: pad too thick (too hight) for me.
4: putting on and lower a wound 6th string is barely within what this PSG can handle. Works fine with my preferred Jagwire and LSS string-sets (.022W 6th), but had to hook the lower-return spring upside down - change its curvature when stretched - to prevent the spring from scraping against the lower-scissor.
5: lowering a wound or plain 6th string exposes the solid nut's weaknesses, as the string tends to hang after a lower (G# to F# and back) - audible hysteresis.
6: more space for knee-levers on an SD body, and easy to reposition the RK levers to suit my playing position.
7: screws on knee-levers can be tightened to make the levers stay up when needed.
8: the GFI-II PU suits the PSG, and my taste in tone, just fine.
9: a little "short" on inherent sustain, but no problem once it gets a little acoustic feedback.
Conclusion: as all else are, or can be, tailored to my liking, if it hadn't been for the audible hysteresis caused by the solid nut, this little PSG would have been my preferred instrument. That hysteresis irritates me enough to go for my (a lot heavier) Dekley instead.