An inside the waist holster will never be as comfortable as a belt holster. I carry IWB when I absolutely need to but it has never been a favorite. OWB holsters are quicker for draw, is much better for comfort and there are so many problematic issues which can come up during the draw process from a IWB holster. An IWB requires larger clothing, it results in scraping against your skin, your body sweats on the holster and gun and none of these are comfortable for me.
That's been my thinking on the subject, but I wondered and it does look like a few guys do prefer the IWB. I'm another that would have to buy new jeans before it would be an option for me.
Laws aren't "preventable" measures. IOW, more gun laws won't stop mass shootings.