I did some more shooting this morning with the DA/SA USP .40 and LEM USP .45.
For pure technical shooting, I still think the HK USP SA trigger is better than the LEM. However the cost of that SA is a truly lousy DA trigger, some more administrative complexity, and the presence of a safety/decocking lever. For my use as a woods gun, today I am now leaning towards LEM as it turns the USP into essentially a high cap, lighter weight DA revolver, or long travel Glock, depending upon your perspective.