It might make sense to have both. Its rare to see a home backup system that has as much capacity as this truck. It'd effectively extend your home capacity and also provide a resource that could be charged away from home.

We don't have many grid outages here, but the ones that happen tend to happen around large weather disasters. Commercial areas, often with DCFC tend to get restored a little more quickly than more distant suburban residential power and tbh, most people aren't driving that much during those periods anyway.