http://www.seidioonline.com/product-p/hltmg2asc.htmI found a spring clip holster that works well for the Samsung Intercept. The Seidio clip for the T-Mobile My Touch 3G made for use with the Seidio Innocase (be sure to get the one made for use with the cased device) fits the Samsung Intercept nicely.
I admit it. I am a geek and I still like to wear my plastic holster and this is a great one. I have a Rocketfish half case (front half) on my phone and an Invisibleshield on the screen and this holster and I am good to go.
The holster fits like a glove and because of the spring clip, it stays securely in place. Police officers always ask me where they can get one, too. You can jog with it on and the phone stays in place. (that's why policemen always want Seidio) Holster would also fit the naked phone. It would also fit a fully cased phone, but not so well. "Screen in" design to protect the screen and no "phantom" dialing. All contol buttons "float" above the backboad and are not activated by replacing the phone into the holster. Well made, but you pay for it.