Directly to the question: No, I do not. Although the Gregster sits tightly on the legs, what they should too, but not a cut or reveal too much. The seams are so well placed that they do not interfere or rub while running. In addition, the pants keep you warm, but not overheated when I sweat. That's great.
About the buttocks is still a small bag attached, where you can accommodate your key. But nothing more. So if you want to run with cell phone or MP3 player, to a bracelet or similar must buy. I personally feel bad because at least the phone already has become the companion par excellence.
Conclusion: a great running shorts, which I no longer hergebe. I would highly recommend it.