Update: Reset it yesterday and it takes the third driving cycle to relight it.
I hear what seems to be the typical lifters tapping, sounds normal to me but I am not very familiar with the sound of the Subie engines. Where is the oil line screen? Is it easy to check like the banjos? Not sure if I am being paranoid now, but it idles a little rough under load (in drive), but I am used to a buttery smooth twin turbo I6 so I am not sure what I should expect from the H4.