The first time I tried them, they were awful, and I lasted less than a week. A few years of struggling later, and an important change in the fashion for glasses, step up of the level I bought and they are awesome. I would need to carry 2-3 pairs of glasses without them, be constantly swapping between them, and struggling in sunshine. My prescription is strong - about +5.5, then reading is plus 1.5. I now go for the REALLY good lenses (high refractive index so thin and light) and photochromic so a pair of glasses is north of £700. It's worth it as the first thing I do in the morning is reach for my glasses, and the last thing at night is take them off. I really am useless without them.
The big thing is getting used to looking through the right bit, which does mean moving your head more.
The bit about fashion? when I first tried them lenses were quite small. Now lenses are a lot bigger which gives more space for the zones.