If I were to buy a Bianchi leather holster for my main carry gun, I'd get a Model 59. Paddle-mount, thumb-snap retention strap, and full-length holster. I have one for my Walther P22, and it is a fine holster, and looks really nice too.
I'm not a fan of holsters that are shorter than my slide. I don't like the idea of the front end of my gun being exposed like that. I sometimes bump into things, and having the crown of my barrel and front sight exposed like that would pretty much ensure that they would get banged up, scratched, dinged, or otherwise messed up...