Today is casual so I'll be carrying my Osprey mock croc mini navy bag which goes across the body.
It's not nearly such good quality as my large black Osprey bag or as solid, but it wasn't expensive (TKMAXX special), so I'll just use it until its too shabby - it's done 2 years for £29.00($45) so I can't complain..
Though both of my crocodile bags are in their 13th year and still as good as new!