Yes, it will mean more.So what happens when you say to your mate down the pub
"Woah Dave, easy on that drink, there's 4cl of alcohol in that"
?
Do you think that will mean more to him than:
"Woah Dave, easy on that drink, that's 4 units"
?
Any reference comes entirely from personal experience. Changing it only means most people will be forced to try and relearn how to assess their drinks.

