These can look really great. Can I wear an oxford with Suede Upper and polished black calf "lower" to work with a worsted wool suit? I cant say I have seen it before but it doesn't seem that noticeable. Examples are sort of hard to find but here is one. Here is G&G's in a monk http://www.bespoke-england.co.uk/collections/shoes/products/oakham-in-black-calf-black-suede-dg70 I'd love to see more examples if you guys have them.