Disable HTC Messaging in Sense 2.5?

[signothefish]

I've been looking around on XDA and here for a way to disable the HTC Messaging that's included with the Sense 2.5 UI. It's very slow when you have a lot of text messages. I managed to make it snappier by downloading a patch provided by HTC, but still it can be slow at times, especially after you hit Send. Does anyone know of a way to disable it, or at least install something that will override it when tapping on a message on the SMS tab?