Thought that he had a very good game - both penalty decisions spot on.
I think that is how you want an official to referee with VAR - he was still decisive in his decision making and didn't play it safe by just deferring a big decision to VAR.
He was perhaps a bit lenient with a few Palace players who could/should have been cautioned but generally a good day at the office - I would say Friend is one of the leading contenders to do the cup final this year, perhaps along with Pawson?