On an office day, I carry a regular sized bag. On weekends, I am able to wear mini bags now. Come to think of it, I really don't need all those stuff I carry to work since most are 'what if' items. I can actually stock them at the office. Since 1 or 2 years ago, I have been having neck pains when I carry heavy bags, so I really try to lighten my load. A smaller bag also tends to be lighter than a bigger bag.
If it gets down to it, I think I can carry a mini bag to work (contents-wise). But I feel a regular sized bag is more professional looking.
If it gets down to it, I think I can carry a mini bag to work (contents-wise). But I feel a regular sized bag is more professional looking.