Width should be in line with their charger models. You can simultaneously charge up to 6pcs of 18650 for sure. Noticed that slot 1 and 6 (2A)are wider than its adjacent slot. Maybe Lii-6S has enough space to accommodate 2*26650+4*18650. I can measure when i get mine in a few weeks time.
No, not if the photos and graphics are of the genuine charger, which they should be. The pictures make it clear that the display shows info for only one cell at a time, like the 500 and 500S. It appears that you press one of the middle 4 buttons to toggle display and control between pairs of bays and otherwise operate it much like the Lii-500 Engineer and Lii-500S.