I never even thought about it until I saw this thread but yeah, I have changed it up. I used to hip carry a G19 in a Serpa holster and even tried a shoulder rig a few times. In summer time, I often used a "fanny pack" style concealment holster for it, or just carried a smaller pocket pistol.
I'd tried several IWB's that I didn't like or just ended up not being comfortable but, they've improved greatly over the years.
Today, I carry a Shield in a very slim Kydex IWB, at the 4 o'clock position. Carrying my smartphone at the 3 o'clock position, also helps conceal it. It's so comfortable that I can "almost" forget it's there.

The only downside to carrying in this position is, it would be difficult to get to while sitting in my car, if I needed it. For this reason, I rigged up a holder between my seat and the center console that my holster will snap into so now, my pistol is readily available if the need should arise.
Here's the holster. On the backside, it goes almost all the way up and even covers the safety.