The Rams practice their one's against their two's most of the time but their is a healthy does of one's vs one's.
Regardless of which squad is on the field the defense is running the full play book: stunts, blitzes, odd man rushes, etc. The OL, therefore, gets reps a legit defense. And sure, there's no tackling and the QB can't be hit, but I fail to see how those restrictions impact what the OL is doing.
I can't find the quote anywhere but I remember reading a few years ago that the Rams ran something like 6,000 plays between OTA's and training camp. Even if that's not the number and even though the starting OL doesn't get all the reps they do get a significant amount of time playing together against defenses that are running anything they can to win.
So let's imaging the starting OL plays 15 or 20 snaps together against a defense that is as vanilla as it gets. How does that make the OL better?
AlbaNY_Ram