My feet are hot. I'm a man. I'm a teacher.

Acceptable footwear for work/school (with no socks obviously)?
Will the kids make fun of me?
Will the leather get stinky?

http://www.office.co.uk/view/product/office_catalog/1,71/7271285257
http://www.office.co.uk/view/product/office_catalog/1,71/7243445519