I saw one on a 09 USB in the showroom. You can see where the 3m layer stops (barely), but that's probably better than rock chips all over the front end. After a while the clear layer will show chips and such but it'll save the paint over the long haul.
In any case, I chose the VentureShield Product and had it installed by professionals in the Los Angeles Area.
( www.aerotect.net to be exact) The installers are very good and do anything you ask them.
I got a full hood wrap, front bumber, front side panels, A-pillars, side mirrors, side-skirt, full rear bumper, nav screen, and door handles.
Basically, I wrapped my car in a condom.
I have no fear driving behind semi's on the Freeway.
I also do lots of canyon runs with these guys here: http://www.lexusf.com/forums/showthread.php?p=15692#post15692
it's super fun, but rocks are flying everywhere. I have some dings on my windshield, but the entire paint on the front my car is fully protected.
In summary, I highly recommend getting a clear bra installed. The bare minimum's I would do are:
Full hood (you don't want the half hood and see the lines, it's tacky IMO)
Full front bumper
side view mirrors.
Everything else for me was because I wanted the extra extra protection.