Webley, I won't buy a Taurus - too many friends have had too many lemons - and I was not aware of the ILS on the LCR when I bought it. (I no longer have the LCR).
I do not believe my old GP100 had the lock. I traded the GP100 for a Colt 1917 that definitely does not have a lock.
My new S&W handguns, 442 and M&P auto, were specifically purchased as no-lock variants.