Maybe one for work office and one for the house or portable. They are that good but sadly I just bought an Ultrasone Pro 900 and another $200 right now would not be smart.
I like having different sound signatures but my real point was for $200 these are a true steal for me.
Actually that was the point I was gearing for : might as well have more than one sound signatures rather than two exactly the same signature. A bit not worth to buy two pairs of the same thing IMO.