Denim is personal: the fit you return to, the hem you prefer and the way you wear the waist all matter. Browse Sandro Kuwait's women's jeans and men's jeans with those habits in mind. A tucked-in top makes the waist part of the outfit, while wearing it loose changes the line between the upper and lower halves. Try both before adding another layer, and let the shoes determine how much of the hem you want to show.
Keep a new pair familiar in one respect while trying a different proportion elsewhere. A shirt, knitwear or a simple T-shirt then gives the same denim several directions through the week.