It's a personal preference for me. I'm nearly 62 and a bit old school. I hate what is referred to by many as the Hillary hole.So I have a 686, 4 inch, with the lock. What is the issue? It isn’t a problem for me just ugly, but is there another reason to dislike the gun? Not trying to high Jack the thread, but my 360 pd also has it. So if there is reason for concern I’d like to know.
I say it is the hole where the soul leaks out of a S&W revolver.
I have owned only one S&W with the lock and I immediately removed the internal locking mechanism.
There are plugs sold to fill the hole left from removing the lock but it's just not for me.
YMMV