In case anyone didn't see it, Thomas did some testing of other desktops running on XMir on Mir:
* XFCE - https://plus.google.com/u/1/110095242873945299189/posts/93dAjSwbmch
* LXDE - https://plus.google.com/u/1/110095242873945299189/posts/ZxfdAPrybtn
* GNOME 3 - https://plus.google.com/u/1/110095242873945299189/posts/3q7YJrc8Fpp
He couldn't test KDE because of an archive issue (non-Mir related). He will test this soon. Unity 7 already runs on XMir.
Thanks,
Jono* XFCE - https://plus.google.com/u/1/110095242873945299189/posts/93dAjSwbmch
* LXDE - https://plus.google.com/u/1/110095242873945299189/posts/ZxfdAPrybtn
* GNOME 3 - https://plus.google.com/u/1/110095242873945299189/posts/3q7YJrc8Fpp
He couldn't test KDE because of an archive issue (non-Mir related). He will test this soon. Unity 7 already runs on XMir.
I asked him about performance and he said it feels native.
Thanks,