I have a DIY electrical system that is in a large housing with wheels. Just drive the van up to the back door and run an extension cord from van to house to run the refrigerator and freezer. System is too heavy to lift and carry to the house.I am an electrician by trade, I have ALL the skills and tools to build my own system. I think some Purists are purely missing the point of an all in one system. If you have a van set up like mine will be for weekend adventuring (not living the van life bruh) it serves as a power supply that can be continuously charged via the alternator/solar in the van. Living here in the northeast we have power outages quite often and if the Yeti can serve as my van power constantly being charged and run my van set up and serve me well but also pull double duty if I have a power outage at the house it's a win win. A few quick cable disconnects in a power outage and boom, I have a portable power bank I can slap in the house in an emergency. To me, it just makes more sense if I'm spending all that money anyway to have something that pulls double duty and in that case is well worth the invenstment vs just running my van.