Yes and no.
Yes, Meysan is not in the Whitney Zone, so you do not need a Whitney PAss to enter the wilderness to hike to Meysan.
But no, you DO need the Whitney exit permit to exit by the MW Trail. If you enter at MEysan, CLimb to Whitney and then exit down the trail to the Portal, its just like entering at Shepherd PAss trail or Onion Valley and exiting by Whitney Trail to the Portal: its subject to the Whitney exit quota and there for the exit permit.
