The MyVu PMV comes with three nose supports in varying shapes/sizes. They are pretty comfortable and have a texturized finish for keeping the glasses from sliding down. There are also two earbuds that dangle from either arm.
The shape of the arms on the glasses contribute to the comfort problem. They're pretty thick and there's no ergonomic curve to fit to the shape of your average ear. Plus, the glasses are heavier than most sunglasses, which may bother some wearers.