[renox]

Yes, this is quite possible.. Wayland is much lower level than X11 so each compositor has to add its own additional protocols which could 'in theory' be incompatible but note that 1) these additional protocols are most of the time a port of the existings protocols 2) the real reason that a Gnome app can run on top of KDE and vice versa is not just because of X11, it's because the developers of the applications and the DE worked together to make it happen so as long as the will is still here the inter-operability will be here eventually. Eventually is important here because I expect a long instability period..