We might as well call it the G26X. It can do everything as well as any other 9mm Glock (except maintain its finish on its slide stops ).
Because the G26 has such a short, rigid and thus accurate barrel, carrying it in a HIGH-RIDING leather OWB pancake-style holster allows it to conceal as well as my G43 IWB in my opinion. The picture below is of a G19 on the left in a Galco kydex IWB holster. The G26 on the right is in a Mitch Rosen UPL-EXP OWB high-riding holster.
Anytime you have a belt clip or loops in front of the gun (rather than to its side or sides), it's going to make it a thicker rig than it needs to be in my opinion. With a high riding holster—and the relatively short barrel of the G26—it's easy to conceal OWB because the muzzle doesn't go south of the hemline of your t-shirt. The design also holds the pistol close to your body so it's very concealable. It's also more comfortable to carry, quicker to draw, easier to shoot than a single stack, and you don't have to buy your belts and pants two sizes larger.
As Massad Ayoob and others have pointed out, in the right hands, it tends to be more accurate than a G19 or G17, and it can compete and has even won against G34 pistols in competition. I agree with Mass and others that the shorter barrel and hump, which drives my hand higher onto the pistol, is responsible for its accuracy.
I use the Pachmayr grip sleeves because they continue along the same contour of the grip instead of recessing the pinky which I don't like (e.g X-Grip).
Best of all, the reliability is unquestioned after decades of abuse.