hehe I wondered if anyone would make the connection! Well done!
I had not even heard of Evans when I took this, though, but of course it is such a photogenic spot that thousands have taken a similar photograph.
Yes, I have indeed thought about platinum, and platinum/palladium, but they are expensive processes and do require a lot of experimentation and skill to nail down one's own process. Financial and space/equipment restraints preclude pursuing any "alt" processes for the time being, but it does occupy a spot at the back of my mind.