Its not that new. Just new for making a 1911.
Aluminum has been used in pistol frames for a while as has polymers. Neither has any real issue with excessive wear in properly engineered designs.
I dont see any real benefit of a super pricey metal alloy when cheaper aluminum and polymer does the same thing.
"Gun control: The theory that a woman found dead in an alley, raped and strangled with her panty hose, is somehow morally superior to a woman explaining to police how her attacker got that fatal bullet wound." — L. Neil Smith
The problem with being stupid is you cannot simply decide to stop doing dumb things...
"I crapped my pants to avoid the draft!!" -Ted Nugent