Hi everyone!
After I could set up everything, the system in my PE decided not to boot anymore, so I had to reflash. I did not feel like doing the full reflashing dance (Dingo golden, filesystem re-distribution, Ermine, Allmine), so I decided to go and make an Ermine Golden update, so you can reflash over anything a working Ermine.
It turned out to be reasonably straightforward once you understand well how the UBI system is laid out and how update.sh works. I did not need to do major changes to the original Ermine update.sh (the enTourage guys did a decent job, I have to say).
This is the as-released Ermine 0.9, I did not add anything else, although I don't think that will be hard. Also, in this one there is about 500 MiB for the library and about 2.5 GiB for apps

. That is also configurable in the update.sh file for courageous people.
I trust this one better than the previous dingo "mucked" update, so feel free to try it (if you need it) and sending feedback. It should install over any other system (Dingo, Ermine, Allmine) although I only tested installing it over Allmine.
It
*will erase all data, apps and settings* (it is a golden update after all). Also,
DO NOT install in a full-size Edge, as it will install happily (checks are disabled so it can install over Allmine) and mess it up.
I have also noticed that all this filesystem rebuilding has brought up several bad NAND blocks in my PE. A caveat is that this might exercise too much your flash and cause bad blocks (the block would go bad anyway, the NAND flash in the PE is quite bad I would say).
You can download it at:
http://www.sendspace.com/file/klj2wv
Thanks to MasterTec for hosting the file in his site! the link is:
http://www.ympsa.com/edge/PEONLYGoldenErmine.zip
If anyone else wants to mirror it, feel free!