I personally dont like it, nor do I like stripes. I always "fluff" the carpet in one direction or the other when done doing carpets so it all has a uniform look to it.
I mean, the goal is better than new correct? did the car come with stripes in it? is it a zebra? looks tacky IMO, and when you try to vacuum it next time, then stripes dont go away all that easily (if carpet extracted) and you will have to match it exactly....