Dave, no heresy
I like RC because it is convenient and becasue of the pearl or semi-matt finishes
I read somewhere that longevity is not an issue anymore, it was sometime in the 70s that the base was not properly done... but the learning curve was quick and in the late 80s it was good already.
Agfa MCP was a very interesting paper, nice to work with and in my opinion better than Ilford but always underrated
I used many boxes of it, and when it dissapearead I was very sad.