Guys ,
Just wanted to share some thoughts that a friend who works for a large organization got advice from their immi attorneys . Apparently as a typical behavior most of us with EADs tend not to use EAD and keep H1b active as a fall back in case of 485 denial. But they were advised that there is no such fall back on H1B if 485 is denied . If 485 is denied and only denied if there are really complicated and multiple violations or major issues with 140 , if that happens even the H1B is also impacted and invalidated and there is no such safety in H1 . Infact it is better to use EAD and if you are eligible for H1 in case of problems you can also reapply for H1B.
Any thoughts ..sorry to post this here but thought it was important since GC approval will now wait for sometime.