It's an older design bullet, but I have read positive reports on its performance and no negatives (other than the usual "If it's not the most expensive, premium ammo on the plant it's not good enogh for me" stuff). Since most trainers with any credibility suggest shooting anywhere between 200 and 500 rounds of your chosen self-defense ammo through your pistol with NO failures of any kind to prove reliability, obviously when you choose ammo that costs $1 a round that reliability testing can get costly.
I have no problem carrying the Winchester stuff. I carry 1911s in .45 Auto. If the bullet doesn't expand, I'm still making a half-inch hole in the bad guy.