I purchased the Seidio innocase and holster product from Seidio directly in March 2011, by December 2011 my phone hit the ground from a broken (rusted) spring in the clip that holds the phone in the holster. In looking at the one I bought for my GFs EVO and at one a co-worker bought, theirs are rusting too. A couple months after I got the holster the clip relaxed...I know think it was just the one side of the spring breaking.
Seidio will replace it, first you have to send a request to get an RMA, then once approved you have to send it back within 7 days and include all the information you needed to get the RMA again and write the RMA on a certain spot on the box...etc...basically...they give you as many steps as they can and make you pay to return their broken equipment. I opted to not return mine...all I would get is another holster I can't trust to not break and send my phone on a 3 foot free fall to the ground below. Thank god I was on grass when the first one let go!
With no holster...I like my Case-Mate case much better