Heads up knowledge about adhesives and Van life.
They are nice hooks but I am not sure what temperatures they are rated for. They are meant for household use where there are no extremes of hot and cold. Vans often get into the extremes of below freezing and triple digit above 100. In those extremes adhesives including the adhesive on commonly used 3M household double back tapes and even their velcro can fail. Before you buy take a look at the temperature range for the use of that product. If it is not stated on the packaging go to the 3M product information website to get it.