In the air, the slats will aways extend first and retract last. On the ground, I don't know if it's different, I've never noticed. This is because it's part of the PNF's post start scan. I move the lever and immediately after that, I'm doing other things - so I'm not watching the upper ECAM display. But I will look for you next time I fly and report back.
There are differences in the presentation of the CRT and LCD displays, but I suspect that there is no difference oin the flap sequence as the display should be a instantaneous indication of control surface position.