I drive a 2006 Transit as my main vehicle and gave done for three years.
Converted mine to 75% camper with a partition at the back for bike storage. A Transit will take a bike across the back left to right without the wheels off meaning the rest of the van can be used as a camper. The rear will also takes three bikes with front wheels removed.
The rest of the van has a sink, double hob, grill 2 four foot seats with a table that converts into a double 6ft bed, 2 large under seat storage areas and another small cupboard. Ply-lined and insulated with loft insulation and covered walls in carpet. It’s not a long wheelbase either.
Pull out awning on the side and an awning rail if staying a longtime and need more space.
Added windows and a sky light and then re-registered it with dvla as a camper. No speed restrictions or high bridge charges.
No problem with everyday use at all.
I have never really understood the transporter fashion as they are so small and most people have to store the bikes on a rack, which for me defeats the point if a van.