Yeah those are nice and the 1911 grip panels add a touch of class. As for the changes to the MK III. My Mk III Ruger Standard is a VERY nice gun. The magazine disconnect is really pretty much irrelevant and the loaded chamber indicator doesn't do any harm. The re-located magazine release is WAY overdue, and very welcome.

The .22/45's shoot way better than they have any right to. Most will shot nearly 1" at 25 yards with good loads, and less than 2" with cheapie stuff.