Default I was wondering if the rom from above could be used on the retail version?

I'm guessing it will eventually. But, IMHO, I don't see much benefit of stock vs LG's touches. I like it as-is,& can wait for the upgrade to 4.4 with LG's U/I.

Losing the KNOCK-ON & soft-button layout choices is a deal breaker for me.
Now, if there were some ROMS that keep these features, I'd take a look.

EDIT:
How could I forget, you'll probably lose I/R BLASTER functionality w/the stock ROM. I'll definitely pass.