I have the Seidio holster and case combo and I must say that they are excellent products. I am very happy with them both. I had the same type of holster for my Pearl when I had that phone, and I loved it then as well. The holster works great, and has never, in my experience, released the Blackberry without my intent to have it do so. However, when I want to release the phone, that works great and is easy to do.
Semper Fi 3/2/2
"Wow" is now overused. Therefore, I will use "Magic bananas" instead.