Should be no problem for mitre. Little advice - tiler should cut mitre 1-2mm from the edge, and finish it using polisher (flex) . Cut it too close to the edge and it will chip away.
I know this is an old thread, but wow, what an inspiration. I'm going to try to achieve this in my bathroom, it'll be a first time for me. I'm a DIYer, but experienced generally.
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