I used these in my soffits and I am happy with the light output. The downside is the black finish faded out to a brown-ish color after about a year, apparently from the UV exposure. I haven't tried to repaint them or the like. They do use drivers (not full line voltage). My motivation in using them was to keep a clean sidewall while still complying with the code requirement for 1 exterior light per man-door.
Liteline makes probably the best can-less product on the market today. Just connect the driver and snap in the disc. Outdoor rated. Lots of sizes and lumen packages.