I find myself interested in this Galosh Oxford too:
However, I'm not sure how much I'd be able to wear them. How casual can they go? I almost never get to wear suits, and rarely even get to wear sport coats outside of going to church on Sundays. Would it be acceptable to wear dressier cotton chinos with these?
All comes down to personal style ...
I personally would not wear those with cotton chinos of any variety.