Yes.
My company operates the -500 classic, and -700NG (which I personally refer to as FG, but thats an different story.)
During training on the -500 we were advised to fly the certified min. block speeds 210 kts, 190 kts, 180 kts etc, for the various flap settings (Clean, 1, 5, etc) and add 10 kts if the GW was above 53 tonnes. (220, 200, 190 etc.) We were specifically advised not to rely on the green dot on the speed tape, for min. clean speed cause this was not certified by Boeing - block speeds were. Mind you I just tried to look it up, and the book only says that the green dot speed is "...the best airspeed (climb or driftdown) for an airplane in the clean configuration." Now whether the defined min. clean speed, has larger margins than the green dot speed I do not know.
The -700 speed tape apparently is a lot more advanced, since it precisely calculates min. speeds all the time, and shows them on the tape........
Rgds.