N.,
I visited your links and very liked your photographs. If you focus on pinhole , register to f295.org also. They are really crazy people and post tens of thousands pinhole pictures categorized from diffractive elements to what ever you want. By this way you can improve the frame coverage some of your pictures.
And I did not see your pinhole anamorphic camera shots. I dont know if you are aware of it or not but very easy to construction and architectural photographs of this camera is great.
I was thinking to make my 120 anamorphic pinhole bw positives and tone with pyro and palladium.
In our forum , there are many chemical gurus and they would be happy to help your endeavour to alternative processes.
Umut