Canon 7D user thinking of switching to Nikon D600, big mistake?

As one poster suggested, rent first. Or at least give the D600 a thorough try out in-store. My friend I often shoot with is very pro-Nikon, and once i set down my 7D and tried out her 300S w/70-200 VRII. I literally RAN back to my 7D. While it may just be my opinion(especially to Nikonites), frankly Nikon's user interface vs Canon stinks. One example burned on my brain is having to remove your finger from the shutter, press a back button, then spin a horizontal wheel w/cheap feel on the back, then hit shutter button agan just to simply do exposure compensation. Versus just spinning a perfectly damped back dial on 7D? Nikons certainly have their qualities, but no thanks. If you have no grievance w/such designer mindset, go for it...
Cheers,
Mark