I count 3 positives, 4 neutrals and 3 negative comments so far. Sounds like investing in one is a shot in the dark. I wish I knew how the Flexsteel compares with the one from shop4seats but I haven't found either to put my hands on yet.
One of the things I like about the Belmont is that the armrests are removable so that someone laying down while traveling can use the full length or even hang feet off the end to straighten out. Since the sofa is only 68" long that could be useful. The feet would hang into the stairwell so they would not be in the way most of the time.
Thanks for the opinions so far.