If you're concerned about scratching or denting your K10, I have a suggestion. A friend of mine who owns a pair himself and many Pelican cases suggested using the Pick 'N' Pluck foam that's available for Pelican cases. Relatively low cost and easy to tailor to whatever else you'd like to store in the Pelican case and reduce the risk of the earphone constantly knocking on the interior of the case! The foam for either a Pelican case 1010 or 1012 should fit. :)