All time never had a problem
Another option is to mount the reel on the outside of the back door as you have outside ports fitted.I've seen a few vans knocking about like that
New shape Dispatch if you leave the back doors open then you can reach in fromthe side doors and open the front.This would mean if the van was stolen then my insurance wouldn't pay out. ( Have checked this out )So for me I have no choice but to work with all the doors locked.
I have been working with reel inside for years, don't like taking reel in and out all day and outside ports get all dirty and frozen in winter, on my new Belingo the doors have never trapped the hose but i do use mirobore all locked up when working never had a problemGazza
We worked with van ports for a few months when we converted but the constant lifting in and out along with winding at a low level nearly killed us!!! We've since built a platform to fix the reels in and its much better reeling in!! Also for over a year and a half never ever had issues with leaving the doors open to workIn fact sometimes when we jump back in the van we realise we have left the keys in the ignition still (van off) and all has been fine.
We leave one door a jar, although im thinking of fitting outside port, but not sure I want to damage new van