I just had a few other ideas. I'm sorry if adding more options is overwhelming, but I hope we're helping. We love your work and want to see you happy.
A Ricoh GR (2013, APS-C digital), if you'd be willing to try digital again, 28mm equivalent and without a viewfinder. These are small enough to use with one hand. Ricoh also makes an accessory lens to give it a 21mm equivalent view. I've heard they made beautiful JPEGs in both black and white and color. Michael Ernest Sweet shot his book The Human Fragment on the streets of NYC entirely with the GR and its built-in flash, JPEGs only, edited with Snapseed.