I find my 43X a very nice concealed carry, different from my G26, but not really better or worse. I found the same as previous opinions, the cant has the most overall printing effect for me, second Is ride height and third how tight. So I experimented for a while and found the 43X does best for me OWB, very slim Kydex custom holster, highest ride height somewhere between 15 & 20 degree cant centered around 3 o’clock. This puts the grip, even bending over up and just under my bicep area. Standing straight it puts it forward hugging my ribs. A cotton button down totally will do the job.
I’ve carried my G26 a lot IWB and AIWB with a minimalist trigger guard and clip and don’t think it is any better and is definitely worse comfort wise. I have the same minimalist holster for the 43X also and will carry it in the same position but because I can’t get a solid cant like going OWB, and it sits low, the printing can be worse. But there are those times where it is a better option to go AIWB. But, I don’t think there is really any one answer to it unless the weather and temperature never change and you wear the same clothes every day. It’s all subject to what your wearing or willing to wear the type of clothing material, seasonal changes. If your thinking there is only one way and one holster and if it doesn’t work then change the pistol then I wouldn’t know what to say. I can’t imagine ditching what I prefer to carry over finding what works. I also agree with the other posting in that there may be a time bending over or something makes it print and someone may notice although probably not, but who cares really if your a responsible person legally allowed to do so. One day you may encounter someone who wants to make a big deal about it, the best thing you can do if that should happen is know in advance how you will handle it. It’s More that persons problem in my opinion then mine especially if you live in a state where concealed is the standard but there are no laws against open carry.
Keep at it, you will find what works through trial and error and then have a big drawer full of Holsters you don’t use like a lot of people including myself.