Are you confusing the larger 3.0 with a different seat post bracket with the 2.0? Definite problems have expressed by many people regarding the 2.0 mount. Both mine broke in a few months of use. I have only seen one comment about the seat clamp breaking on the 3.0 and Blackburn replaced it. The reviewer even thought it might be his fault from because he overtightened it. A hose clamp could have been substituted.

What is breaking on the 2.0, the belt clip or seat post clamp? Or both? I would like to know what to watch for. Thanks.