For a start I don't remember anyone reporting a WSoD for the EE so I think you can discount that.
The only real problem is that you get green still pictures when using the camera - the video does not have this quirk.
You may or may not have a problem with the unit coming out of hibernation - some people report no problems with that al all while a lot of us do have that problem and have learned to switch off rather than hibernate.
Make sure you get the version of Ermine fot the device you get - they are NOT interchangeable. Trying to use the one for the PE on an EE is the source of most, if not all, the reported screen problems.
Also I would recommend that you steer clear of the allmine ermine update until you are happy with the standard Ermine - in fact, unless you absolutely have to have the market/play there is no need for it.
One last thing, I upgraded my EE to Ermine almost as soon as it was available from Entourage and have not had any problems other than green pictures and no hibernation.