Basically these speed gives you protection in turns (g loads) as they are dynamic speeds dependent on weight etc. There is nothing really prohibiting you from flying below these speeds, with wings level at least. Remember, you are still protected by Vls, Alpha prot. etc. When having gusty conditions with max flap speeds close to min managed speed (f, s, green dot) I regularly select a speed below these speeds and allow the speed "fall" below before selecting flaps, this to protect myself from flap over speeds. Otherwise you will have the auto thrust adding thrust as soon as you get close to your minimum managed speed and it can sometimes be difficult to get the flaps out with a comfortable margin on the speed.
I have heard the same arguments before and I am sure we will see them here as well!
CP