(imho) the only reason that the hybrid format exists is because the official test cycle produces low emissions and enables car manufacturers to sell large, expensive, high margin, environmentally unfriendly cars without being fined for not meeting emissions targets.
I suspect hybrids will be the 'go to' solution for many van users in the short/medium term while there's pressure to drop pure ICE but BEV technology doesn't (yet) work for many use cases. Ford and VW are launching 2.5L petrol hybrid versions of the Transit and Transporter this year (as well as diesel and BEV models).