there is no strict rule as to whether EAD should come to the applicant or Lawyer.. My first 2 EAD's came directly to me. the last one (3rd one RD - June 16,2004 ; AD - August 16, 2004) went to the Lawyer)
I think it all depends on what Lawyer put in as your address (whether yr home addy or Lawyers office addy).
Thanks