Hi, I'm type 2 and work in an office/factory environment. i've stopped wearing my safety shoes when in the office but have to put them on for visits to the factory. i've found my feet get warm and toes feel crowded in safety footwear more than say casual shoes. i'm aware that non-diabetics where i work sometimes complain about safety footwear and its lack of comfort.
Maybe worth speaking to your manager or safety rep if you have one?
Sorry i cant be of more help.
Nik