The holster for my Remington 1858 arrived, and it is a beauty! A perfect fit, and it also fits my Ruger .22 Single Six Convertible: though it's a tad longer than needed for the Ruger, which has a 6 1/2 inch barrel, as opposed to 8 inches on the Uberti Remngton.
Of Ian's two Beretta holsters, I like the Western style better, though the plain style would be better for a concealment holster: not that there's a need to conceal an air pistol.
Jim