I ride a motorbike most days, and need to wear shoes with good chemical and impact protection for work, so I generally wear industrial boots with hidden steel toecaps under the leather - due to my department having a floor that is badly marked by black rubber soles they're all brown suede with light soles.
So I have two or three pairs of those, a pair of black slip-on shoes for more formal wear, and a couple of pairs of slippers. Not sure Clark would wear any of those. Think that's about it right now.
I'd imagine Clark would have at least one pair of shoes / boots suitable for working on a farm.
