Chrome tanned leather is used in a LOT of things, and about the only things you shouldn't use it on is holsters, sheathes, or anything that'll be in contact with oxidizable (rustable) metal.
The reason is that chrome tanned leather is made using chromium salts. Those salts are still present in small amounts even in the finished product and can damage the finish on metal. So, for something like a very nice pistol, or a custom knife, it'd be a bad thing to have a holster or sheath that eats the metal.
Also, chrome tanned leather does not mold, carve, stamp, etc. as well. For something like a jacket or a purse, that's okay. It isn't unusual to see a nice piece of veg tan with a beautiful carving sewn onto chrome tan in the case of a purse.