I have had both at the same time....An SWB as a daily drive (work van) and a lovely converted LWB.
The SWB has now been given to an employee as a company vehicle and the LWB Camper remains an epic capable vehicle with so much more room for our family of 5.
The LWB is used as a camper and it is a great vehicle, but after driving an SWB daily I find the LWB a pain in the arse for day to day driving!
I also find it quite long when attached to our (big Gypsy style) caravan, when touring Europe. Today I have been to a Venice car park that would be nonissue for the SWB, but a problem with the LWB!
After relinquishing my interest in the SWB as my daily drive, I bought an EV to use as my daily drive, leaving me with the LWB as a weekend camper and this has highlighted what a thirsty pain in the arse the LWB camper is as a daily drive!
I would say that an LWB camper is a really great bit of kit for many reasons, but if you want a small nimble camper, SWB is for you!
LWB is a heavyweight, capable bit of kit for holiday purposes, which can accept all of the crap associated with a large family, but if I could spend my time again, I'd have bought extra Durex in preference to a LWB T6!
For those out there where this advice is too late..... An LWB is a good capable vehicle which will accommodate your needs well, but trust me.... it is a tw@7 to park, a tw@7 to tow with, and frankly you need to have a word with yourself if you are looking at an LWB van prior to having too many kids!