Funny this should come up. I just went for a run with my G27 in a Galco Tuck N Go. I didn't tuck it however, I just palmed the entire package and it's not noticeable to passersby at night. The cool part is, when I pass through a lighted area like a parking lot, I can actually tuck it in my floppy running shorts and it holds just fine.
For daily carry, when I carry it, I use a G23 mag with an adapter. Haters gonna hate, but I like the 13 round capacity with the short slide length. The original mag with a Pearce extender always goes with me for deeper concealment/spare magazine.
"You find it offensive? Well I find it funny. That's why I'm happier than you."