I think the answer to the original question is "yes". I was fortunate enough to be able to buy one of each of these little pistols in the same week. I brought them home, cleaned them and oiled them properly. Then took them both to the range and proceeded to fire 200 rounds though each pistol with no further cleaning of any type. The ammo was an equal amount of 115gr Hornady critical defense, 124gr Hornady XTP, 124gr Federal Premium defense, 124gr Speer gold dot and 115gr American eagle practice ammo though each pistol. Now I am not trying to be a pro pistol reviewer here, but I just wanted to share my personal experience.
The LC9 worked like a swiss clock with every single pull of the trigger. Not a single hiccup of any kind. Perfect feeding, firing, ejecting and slide lock back after last shot. It would consistently stack shots into a 2 inch pattern at 7 yards. I thought the trigger was just fine. I found it to be smooth, controllable and very predictable. I might even call it perfect for a weapon of this type. I found the LC9 to be slightly trimmer, lighter and a bit easier to conceal with more rounded edges than the Shield. This pistol is a delight to own, carry and shoot.
The Shield is also a fine pistol, but...
I found it to be slightly more chunky with more square edges and a bit more heft making a little harder to conceal, but not a big deal. The pistol did fail to fire twice due to light primer strikes, and the slide failed to lock closed twice when cycling the first shell from a fresh mag. I am confident these little blips are just due to it needing a little break in time. The trigger has a slight amount of free travel and then breaks fairly crisply, but it did have just a bit of creep before breaking. The accuracy was equal to the Ruger also stacking shots into a 2 inch pattern at 7 yards. I thought the pistol did give an impression of higher quality to hold in your hand and the sights were just excellent. The grip fit my hand very well.
I went home thinking both of these were fine firearms and I was proud to own both of them (however, I would want the Shield to be fully broken in before I bet my life on it). So after all of that, and based my initial (and admittedly limited) experience with these two pistols, The Shield went in the safe and the LC9 went into my DeSantis IWB Cozy Partner and goes with me everyplace it is allowed to go. I am looking forward to my next range session with the Smith to see if the little problems have disappeared, which I believe they will.
In the end, I see no reason whatsoever to think the LC9 will get ran out of town by the new Shield.