There are already comparison videos all over Youtube. Many comparisons between the Shield and G26 as well- and most of them came to same conclusions as i have. The thinness of the Shield makes printing much less of an issue for most body types and carry positions. It's grip is barelly longer than the G26 and the thinness much more than makes up for it. That thinness also makes it much more comfortable for IWB for most people.
I carry my Glocks OWB in a Crossbreed super slide or bianche pancake holster because of the thickness of them. Doesn't work under any t-shirts i have tried. Works great with fall/winter wear though- or a very loose/baggy button up shirt in summer- but i can't always wear those and wanted something more effective than the LCP- hence- the Shield.