Thank you all for the input. My intuition was telling me to consider the Rodenstock Grangagon 55mm, and based on your threads I'll take that hunch and go with it, (albeit possibly considering custom made lens caps from Grimes as a required accessory). I hope its not TOO wide for my TOYO Field 45AII, which is supposed to have the Schneider 58XL as the widest limit of usable lenses.

Aside: I'm too impulsive to test rental lenses as was suggested, but I know some of you aren't so thank you for the fruits of your labor. When time comes, hopefully in next year, I'll order the 55mm from RW, and keep it if it meets performance expectations. I'm looking forward to it.