The TALO version has the same hammer/trigger/grip frame as the standard 4 5/8" and 5½" Supers, which is the same as the standard Blackhawk, except the wide spur hammer. The Lipsey's version has the Bisley hammer/trigger/grip frame. Otherwise, they are identical.
It's "Bisley" and pronounced BIZ-lee.
Davidson's ordered a few hundred Vaquero's in .38-40/.40S&W back in the `90's.
No, TALO is not a single company but a cop-op of several distributors, Lipsey's is a single distributor. Who happens to be part of the TALO co-op, as is Davidson's.