With all the stuff a guy needs to carry, has the man purse's time arrived?
Put on a tie and carry a briefcase. No one questions a man with a tie carrying a briefcase, even if all you carry is your Activia yogurt and a copy of Cosmo.
Get a laptop computer bag even if you have to buy a $20 broken laptop to carry in it. You can shove anything you want into the bag just so long as you do have a computer in it. (Checking mine: electronics catalog, check book, phone, a netbook to keep my laptop company when I'm gone, USB hub and a network cable)
The only ones questioning a man in suit and tie are those Anti-FA (anti-First Amendment, Anti-Free Association) types.