Lawyers normally don't have any liability risks, no? And reputational risks are very limited, a lawyer can always point to a judge, to the other lawyer, to circumstances, and away from their own (or the AI's output) blunder.
Layer can be disbarred. And judges do not accept "ai did it therefore I, the layer am not responsible for the false claim" as an excuse from layers.
Realistically a lawyer never gets disbarred. There is no incentive to disbar a lawyer, and a single client usually wouldn't know if a lawyer is consistant in his/her misconduct, judges can't care less and wouldn't go against their friends/buddies, no?
Representing anyone in a court room by definition carries liability risks, because the judge can punish the lawyer unilaterally, but not the AI.