Vinal stripes on curved surfaces....

I'm wanting the wrap around stripes for my 06 when it comes in. I have been talking to my salesman at the dealer and he says their installer won't go around the bumpers because the vinal will eventually crack there. He says if I take it to some other installer They will most likely use razor blades to trim around the 3rd brake light and l/p opening and that will void the warentee on the clearcoat. I see alot of people have the wrap around stripes out there. Has anyone had these issues?
I'm looking for installers in the St. Louis area if anyone can recommend one.....