James K, as I noted above regarding aesthetics, think on where Ruger or Taurus put their locks. It is in a more discrete location. So while it may present the same small increase in risk, it is out of sight and out of mind for most of us.
Speaking of aesthetics, buck460XVR is right about the Ruger barrel billboard. While possibly less damning than the visible lock, it is both ugly and stupid. Why blemish something of such value with something so ridiculous?
I don't own a Ruger revolver but I've been considering one. General advice seems to be that they all benefit from a trip to the smith when you first get them. Couldn't all that nonsense be buffed out or something?