I haven't used Grable's Property Editor so far, no. I've tried it, obviously. I thought it was very nice, but wasn't quite what I wanted for my editor, and I don't really like using other people's code for major projects, particularly when they warn me that it has issues and I don't understand everything that's going on.
You're right though, it is a darn good start.
You're right though, it is a darn good start.