As far as i'm concerned its a daft SOP. climbing at 250 kts will produce high rates of climb, if the V/S isn't reduced, TCAS TA's and RA's can be produced.
I had some nice gents on the F/deck from LATCC recently, who complained about the Easy SOP, and agreed that acclerating to speeds above 250 reduced rates of climb, as most aircraft would be acclerating below the stacks at BNN, LAM for instance. TA's etc would be reduced in all probabilty.
Obviously turbulence speeds have to be obeyed, when needed.
I believe JMC do the same, please correct me if i'm wrong.