Without the 15rnd mag, I would not even consider the G43X over the P365XL.
The P365XL with the 15rnd mag in it is still a better conceal than the Glock.
For me it comes down to the trigger and accuracy, which all depends on the shooter.
I would shoot them side by side and see how you feel about each. Yes there are aftermarket triggers for both, but the natural point on each goes to a different elevation for me.
If you open or service carry with a glock, you may want to stick with the glock for natural point shooting, for which a CCW has a high need for. I find if I am shooting a lot with a glock and switch to the SIG angle it takes me a few mags to change back over each way.
The grip angle is much more comfortable and easier to conceal for me on the P365XL.
In the picture comparisons it does not seem like much, but on the waist or belly, it feels totally different for me.
I try to like every new Glock and end up buying them, but they all end up off my rotation because just my personal bio preference I guess, I shoot better with SIG grip and trigger combinations... I just can't bring myself to sell my souped up Glocks or G19's that I have "too many" of
