I didn't see those available for the LS when I bought mine, otherwise I would have taken them for a spin. I wasn't waiting around for them to become available either. Watch, they're available now aren't they?
Long story short, the Gen. I headlights with grey sealant cuts the installation time in half at minimum if all you're doing is installing rings when compared to the Gen. II lights. Most advise to refinish the lenses if they're not crystal clear. Believe me, if this guy here can do it, anyone can. Only problem is that it took me 3 weeks lol working on them here and there.
As mentioned, there are numerous threads on this. Google search this site and they'll pop up.