Their "New Vaquero" single action frame has one in it's grip assembly, and you can probably assume the bigger Blackhawks will get them next. The 22 Mk111 and 345 have them. It's a matter of time, whether you and I want them or not.
I won't buy a gun with an integtral lock. Haven't bought a Smith since their agreement. Don't have one that's stainless neither. May pick up a 357/9mm SA convertible and a 45 Colt/45 ACP convertible, but they won't have locks. If it comes to that there's a place advertising grip assemblies without the lock that can be retrofitted.