Pedro, we unfortunately found a major issue with the solution you proposed: it doesn't work when updating the libraries using NuGet, for example from 0.9.1 to 0.9.2. The problem is that Nuget only runs install.ps1 on new installations, not during updates. And updates do modify the hint path back to the original value (with the X86 in the path).
NuGet doesn't seem to provide a script that is run during updates. We're now investigating whether there would be a way to add the references from the install script and not from NuGet... that could potentially work but that doesn't quite sound like the right thing to do.
We are all hear for all ideas that would help us workaround that limitation !