I'd only run a fancy lower lip if you have a nice sturdy undertray snuggled in behind the return of the lower lip.
I run a custom one layer (yes, 1) fibreglass GTR style front bar on mine and it's weak as piss on its own, but quite sturdy once supported by the alloy undertray.
You can still easily chip the extreme lower edge of the lip, and it will stick out like you know what on carbon.
..... just sayin.