I love the F91-W. I’ve owned a few of them. Each one had the same problem; the band would crack and break before the battery died. I foresee the same issue with the non-metal banded versions of this watch. Also the stated 2yr battery life is kind of meh in comparison to the F-91W. I’ve got an F91W that’s been running on the same battery for nearly a decade.
A lot of love here as well for the F-91W. As for the band, I use mine with a Phoenix Nato strap [1], which I suspect will last as long as the watch itself (if you are on a budget, there are plenty of PRC Nato clones out there). I wear it daily, as well as with my suit given how stylish it is in its simplicity. The only maintenance necessary is to gently run an open flame along the strap holes maybe once a year control the growth of loose nylon threads.
[1]: https://www.phoenixstraps.com