I never look at stuff at 2' away. I use my eyes when I am that close. I don't WANT to see a bird at 5' away and I don't do bugs. I am more of a long distance birder or wildlife observer. I will use the Fujinon FMTR-SX 7x50 and FMTR-SX 10x50 for glassing for wolves at dawn and dusk in the huge Lamar Valley of Yellowstone National Park.I.F. has its place IMHO for some users and the places they use their bins. My "Police" Steiners focus at ~2m and are super easy to just pick up and use. Fast focus versus precise slow focus? How about NO FOCUS!
On 6.5 power close focus bins though, I'm not sure I.F. is the best choice for many people as a sharp 2' focus that then changes to ~20' probably isn't an option for I.F. bins.