different brand tires on same set of wheels

saw this thread while searching.....

so I have an offer to buy a staggered set of M contours...I want to use the Nexens tha tI currently have on the fronts and use the Kumho's that will come on the contours, as my rears

any weird handling problems to be worried about? can't seme to think that there would be unless you are tracking the car heavily but for normal street driving/highway speed driving, would this present a problem?

Thanks for your input...