Aperture workflow and Canon EOS Utility

Is there any advantage to having an Aperture workflow that imports RAW images from the Canon camera (Xsi) using Canon's EOS Utility and then importing the files to Aperture?

If I use the Canon EOS utility are the sharpness, brightness, WB values, et cetera, preserved when shown in Aperture?

I saw a previous posting in this forum that says the Aperture WB values are "relative" to the image. It also recommended a standard adjustment template for Aperture/camera directly imported pictures. It seems to me I would need a template for each lighting situation.

Thanks