@Zerviscos mine, the nozzle doesn't go past the end of the tips, doesn't look like it does on yours either though. It's not a problem though even if it does go past, it does on the ER4XR. Theoretically if anything it might reduce resonances and push the insertion peak higher, if it allows for deeper insertion. It doesn't cause me any physical issue with it contacting my ear anyway. I have the Z1R as well and get a good deep fit with that with Spring Tips as well, but this is a much easier fit than that.
This IEM is not bang on Harman in-ear... however that is not my limit as to what I'd consider a "good tuning". This has a pretty good tuning for my preferences. It's certainly not perfect, but neither is Harman in-ear, for me. It's not even what I'd choose if I had to pick and could only have one IEM, I'd take the Monarch Mk2 in that case which is closer to Harman (but not quite, it's better than Harman IMO). For "all rounder" one IEM I'd also pick the Moondrop Variations or Blessing 2 Dusk over this, both of which are closer to Harman as well as being much cheaper. But for when I'm in the mood for this, I find it very enjoyable. I don't think it's a huge step up from something much cheaper, I don't even think it's a better all rounder than many IEMs that are much cheaper. There are huge diminishing returns. But I enjoy it all the same.
Tips are personal, they relate to the IEM as well but more to your individual ear. So it's possible you find a tip that works particularly well for your ear, but this doesn't mean it's necessarily going to for someone else. I replace the tips on basically everything, more to Spring Tips than anything else although I have quite a variety, some work better on some IEMs than others. Tips aren't expensive either, here Spring Tips are $2/pair. It's rarely a case of "can't be used" though, it's more this aftermarket tip is better for my preference.Is it not really bad advertising that an IEM can't be used with the included accessories, and have a good tuning, for a $2400?
This IEM is not bang on Harman in-ear... however that is not my limit as to what I'd consider a "good tuning". This has a pretty good tuning for my preferences. It's certainly not perfect, but neither is Harman in-ear, for me. It's not even what I'd choose if I had to pick and could only have one IEM, I'd take the Monarch Mk2 in that case which is closer to Harman (but not quite, it's better than Harman IMO). For "all rounder" one IEM I'd also pick the Moondrop Variations or Blessing 2 Dusk over this, both of which are closer to Harman as well as being much cheaper. But for when I'm in the mood for this, I find it very enjoyable. I don't think it's a huge step up from something much cheaper, I don't even think it's a better all rounder than many IEMs that are much cheaper. There are huge diminishing returns. But I enjoy it all the same.