In typical hurricane situations, this sometimes get traction. Especially slabs where significant winds came in at the same time as surge.
It's going to be very difficult for Houston. The winds never got high enough for there to be a dispute. Flood, wind driven water, surface water, etc. None of these things are covered by homeowners insurance. This hurricane as it relates to Houston is a flood event. While you can still file a claim against homeowners that will almost certainly get denied (properly, since there is no coverage), it is such a long shot that I wouldn't get my hopes up fighting a fight that you know going in you have no business fighting. Your best bet is probably if you also had a roof leak you could get some coverage to repaint a room, etc due to ceiling stains but your not going to also get coverage for the 3' of water in your home damaging your possessions, drywall, and flooring. Maybe if a few shingles got torn off you get a new roof, if its irreparable due to age.
My best advice would be to get a start as soon as the water recedes cutting out the damaged drywall, carpets, soft goods and hope to start the drying process. Even as uncomfortable as it may be, you can actually live in a home without proper drywall and flooring once properly dried out. Use a camera to document everything you throw away and hope the Feds are more generous with FEMA money than they have been in prior events.