For the chipotle-sugar: On a plate or in a bowl, mix together the chipotle powder and sugar until combined. Rub a lime wedge on half of the rim of a glass, then dip the rim into the chipotle/sugar mix.
For the cocktail: Add the tequila, BBQ sauce, lime juice, honey and maple syrup to a mixing tin. Add a large ice cube and shake vigorously. Place a fresh ice cube in the prepared glass and strain the drink over the ice.