After a volatile five-month mating dance, multichannel menswear retailers The Men's Wearhouse Inc. and Jos. A. Bank Clothiers Inc. have signed an agreement to combine the companies. Under the agreement, Men's Wearhouse will acquire all of the outstanding shares of Jos. A Bank for $1.8 billion. The directors of both companies have agreed to the acquisition.  Jos. A Bank, No. 191 in the 2013 Top 500 Guide, reported 2012 web sales of $109 million and Men's Wearhouse, No. 294, did $51.1 million in online revenue, by Internet Retailer estimates. Their combined web sales of $160.1 million would ...