Yeah, that 18 degree grip, along with the "roundness" of the grip handle, works well for me too.I just put my P365XL on consignment a week ago. While it is a nice gun. I found that when drawing it quickly, it always, and I mean always, had a left pointing bias. Over the years I have experienced this with a few semi-autos. My guess is that it is just the grip shape and size and my right hand don't tend to line up well. This means that I have to adjust my grip before I fire the gun. In an extreme encounter that could prove disastrous.
And I have an M&P 9 Shield Plus that lines up beautifully when pulled and fired. So the consignment decision was not hard. The M&P Shield Plus stays and the Sig goes.