Not exactly cowboy boots, but decided to wear my Chippewa rally boots to the office today. Since you know, you got to have tough footgear to face the rough environment of 8-hours-behind-the-desk. :
Chippewa Mens Black American Hide Logger Boots with Vibram Sole
Chippewa Logger 23 cm Boots - YouTube
Amazon.com: Chippewa Men's 6" Waterproof Insulated Comp Toe 55074 Lace Up Boot,Brown,6 M US : Clothing, Shoes & Jewelry
Chippewa Tan Renegade Leather Lace Up Boots Vibram Sole