I used an X-Rite ColorChecker Passport to create Dual Illuminant profiles for all my cameras. In fact I created two versions of each DI profile using the X-Rite software and Adobe's DNG Profile Editor. Those profiles are set as the defaults in Lightroom and ACR and since each camera's sensor is custom profiled, I get accurate renditions when raw files are imported and I've never had the need to use Import presets of any kind.
I use colorchecker calibration profiles also (single illuminant), but always apply changes to a number of settings in the develop module.
I can see why you might not have the need to use an import preset, but I think you may be selling yourself short here. The colorchecker calibration profile only calibrates the colors. It does nothing to make an image "pop". Doesn't help you process your vision into the image, etc.
I love that I start out with accurate colors, but that doesn't stop me from using the rest of the tools in Lightroom or CS6 as necessary.

