After spending my formative shooting years with DA revolvers, I got familiar with the DA trigger and how to shoot it. I still believe the best training for a DA/SA pistol is to get a S&W 17 or 617 and shoot it DA every shot. After several bricks of .,22, the basics are there. The lack of recoil allows one to see how their trigger press is breaking, and the training is (relatively) inexpensive. If one can shoot a DA revolver, one can shoot most any handgun.
From DA revolvers, I branched out to the wonder-nines and eventually into the 1911. As I got more serious about shooting a gun defensively in the early 1990s, I went back to my roots, starting with DAO Ruger SP-101s, as I believe that trigger pull distance, not weight, reduces NDs caused by stress and the startle reflex. Love those guns (and still use them as backups) but wanted more capacity. I spent a few years with the 3rd Generation S&W DAO autos, specifically the 5944 and 5946, as well as the 1911.
The 1911 is the pistol I enjoy shooting the most and the easiest to conceal, and the one on which I have the most trigger time. The 1911 has been my biggest love, and the pistol that most violates my desire for a long trigger press. But that short, crisp 1911 trigger press makes shooting the gun such a joy. During the AWB magazine limit, the eight rounds of 230-grain JHP .45 ACP in a 1911 made me feel better than ten rounds of something else. But one time I failed to apply the safety before holstering when my "pattern" was broken. Luckily, nothing bad happened, but it was a wake-up call. I still will carry a 1911, and I trained extensively to reflexively switch the safety ON and OFF.
I went to the HK LEM system after my wife jumped from the S&W 65 to the S&W 4046 to the P30 LEM. I also experimented heavily with the Glock system, but I have never been comfortable with the short trigger pull without a thumb safety like on the 1911. I could all too easily see how that short consistent trigger could cause me issues when holstering. I also fiddled with the SIG P220 and the Colt Double Eagle when I got serious about the 1911. It was at that point that I realized that I could fail to de-cock the gun and attempt to holster a cocked gun just like I failed to once apply the 1911 safety.
I really like the LEM hammer guns due to the consistent long and smooth trigger, the impossibility of failing to de-cock before holstering, and the ability to feel the hammer while holstering. I considered the Beretta 92D but prefer to carry the HK due to the thinner profile and lighter weight. The HK guns are available in 9x19 (P30) and .45 ACP (HK 45C) and use the same holsters. So I can pick which cartridge I want or when I need to carry in a state that does not like the fifteen-round P30 magazines.
Back to the original question: Does the DA/SA transition bother me? No, it does not. What bothers me is the extra step needed to de-cock the DA/SA gun when the shooting is done or does not need to start. Not that the step is hard, but that I can, under stress or if my habit is interrupted, forget to de-cock. Since I can shoot the first shot DA, I can shoot them all DA. Plus, the LEM DA is much lighter than the S&W DA and smoother than the first shot from a S&W DAO 3rd Generation.