I remember checking that list in the original link when this whole hooplah first began. Our Honda was originally listed as 40 lbs for the child and now it has changed to a total of 65 lbs max (restraint + child). Our Foonf is a heavy beast at 36lbs which only gives us a latch install for my daughter until she hits 29 lbs (she's currently 23lbs)!! I am a little skittish of trying the seatbelt install because you have to take the seat off and route the seatbelt through the lockoffs in the Foonf but they can't pull or slip, and from what I remember seeing in the manual, it looks tricky. Really, really unhappy about the car manufacturers right now--they need to do THEIR JOB and do the right testing and reinforcement, otherwise what is the point of latch?!
ETA: My sons are in a seatbelt install with their Frontier 85's and have been for a year but only because my 2010 Odyssey only has a center latch in the 3rd row and they right outboard in the 3rd row. DS1 is 45 3/4" and 43.5 lbs at 6 years old and DS2 is 42 1/2" and 41 lbs at 5 years old. So according to the old and new guidelines they would have to be on seatbelt installs regardless. However, with the LBP installation being a pain, I really wish LATCH was still an option sometimes.