I really like the idea of a TKC front and K60 rear. Haven't tried it yet, but have had both tires, front and rear, just not interchanged. The K60 front is crappy in super loose stuff, while the TKC rear is gone in 3-4K miles. Just my opinion. I had a K60 front, albeit with 8500 miles, and it almost killed me off road. And the vibes do suck.
"being alive is a crock of shit" - Kilgore Trout