Scot Airways Dornier 328s have 3-point inertia reel belts, lap strap and shoulder harness. They're the only commercial aircraft I have seen them on but they come over as much more professional than the lap-only belts (which were the standard fitting in US cars in the 1960s, but UK authorities wouldn't allow them).
Any other aircraft with such belts in passenger seats ? 3 point belts are standard in light aircraft, but no inertia reels, just lots of fiddling at the start !