I've only used the Lawyer once, but he was amazing. I was of course playing against gremlins who have low wp, but making Ophelia run across the table like a pansy with cross examine was just fulfilling. Plus she lost her next activation to rally.
I can also see where his usefulness could be lessened depending on who I was facing or how big a game I was playing, but I have to go with Therapist on this one. Getting your opponent to worry about a model that can't even do any damage is great, and helping them burn ANY cards out of their hand is always a plus, especially when you've got Nino or an Executioner on the table.