The description of characteristics of a particular sub-species can only serve as an indicator. What is said about one sub-species can be equally valid for any of the others. A generalisation cannot be made.
As an example, a general statement that Italian bees are inclined to swarm and Caucasian bees are not, would be wrong. All healthy bee colonies are inclined to swarm when conditions are good for starting a new colony, as this is their natural way of reproduction.
Each colony is different, has its own characteristics, even when their queens are raised from the same mother.
The Bees we are dealing with today are the result of decades of selective breeding. Queen breeders of all sub-species have used the same selection criteria for decades, they all have been aiming for bees that are: docile, prolific, industrious, resistant to diseases, have a low urge to swarm, have good grooming and housekeeping characteristics.
As far as Hobby Beekeeping is concerned the sub-species has only informational value and does not really matter - as long as you are happy with Your Bees.
Why would you want to swap Your colony of very friendly Mongrels for a colony of “pedigree Italian” bees who enjoy chasing you and your neighbours through the backyard?