Don't mean to quote myself (which is of course the height of conceit!), but wish to thank those who provided advice and input.
I've just returned from a most enjoyable and educational hour with Phillip Car and the team at Double Monk Sydney at the Saint Crispin trunk show.
I ended up going with this model
with a chiselled last, in a deep brown (Edward Green doak or thereabouts), solid brown toe cap with some burnishing, and subtle goose feathering on the vamp and heel, and matching suede facing.
Due in June.
Well, I just came from the same trunk show at Double Monk Sydney myself. Mr Car and the entire team was spectacular, and I got to learn more about my shoes than I have ever had through my own research.
Given my future work trajectory, I settled for a more conservative pair in black. I made a mistake of not making an appointment but the team was able to help nonetheless.
Glad to be joining the club. Looking forward to a lifetime of joyful wear.