Good thread and discussion. I'm personally ambivalent about LEM. My example is a .40 P30L V1. After 6+ months of dedicated practice, training, carry and competition (IDPA) with mine, my competition scores were still nowhere close to what I've achieved with my Glocks and VP40.
But still...the gun is superbly accurate, with exquisite ergos. And it handles the .40 quite nicely and controllably. But I shoot better with my Beretta 92D DAO, with triggerpull-optimized Wilson Combat components (including the WC triggerbar and springs). Between the P30L and the 92D, it's not so much ergos, it's triggerpull characteristics-I find myself preferring, and doing better with the heavier, more resistant (relatively speaking) triggerpull on the 92D-which also has a consistent pull from inception to break.
I'm in no way throwing the baby out with the bathwater-I consider the P30L LEM to be a superb duty/threat management tool. I plan on talking to HK after the holidays on the V1/V4/V4 hybrid spring combinations, as I may need to send it back to them on another non-operational issue anyhow.
Best, Jon