1. A method of configuring an implantable medical device, the implantable medical device comprising at least sensing electrodes for capturing cardiac signals from at least one of a plurality of sensing vectors and operational circuitry for analyzing cardiac signals from the sensing electrodes, the method comprising: selecting a first sensing vector using the sensing electrodes for a patient; forming a first sensing template using cardiac signals from the first sensing vector; having the patient assume at least first and second postures; determining whether the first sensing template is useful in each of the at least first and second postures and: if so, verifying the first sensing vector and first sensing template; or if not, determining that the first sensing vector and first sensing template are not well suited for use in all postures.