If I understand everything that I have read about the Browning 1911 in .22LR it is a 85% Scale reproduction of a full size GI 1911. Apparently the gun is small in your hands, and the Barrel is of a length that is prohibited...
I don't know anything about the Umarex unit you mentioned.
Have a look in the Pistol and Revolver forum, the Browning .22LR 1911 has been discussed to death...
So have all the other .22LR 1911 options out there for that matter...