I'm still holding off. Not in a panic - I just assume that eventually Amazon will force a K4PC update on everybody by refusing to download new purchases to the old version software. I imagine that they will keep the old PID Kindle method active for a long time, as there are still numerous original Kindles functioning.
So at this point I'm really rooting for those really smart techy men and women who get those python scripts working to do their magic.
Heck, I've waited this long for collections - I can wait a bit more.