As far as I can tell there is no deluxe version of the 457S so if you want a light .45 3rd gen gun without a rail you pretty much have no choice.
You c-a-n have the rail removed and plugs installed on a 4513TSW, but I agree about the short grip models not being as comfortable. They are basically a CS45 in length.
While there may not be a deluxe version of the 457S, there are a couple Super Deluxe versions called the Shorty 45 and the 45 Recon. But they will cost ya a lot more than a 457S.