I use them and in relation to some van signage on here two of my vans, are quite boring and have small signage, the Transit however has some of the biggest sign writing I have seen and you could not miss it!
My trailer is also blank and I have been debating whether to put a two sided wrap onto this but here's the but.
Our work is national and a lot of the time I use the caravan club & caravan & camping club camp sites for accomodation and they do not like contractors and they dislike sign written vans with a passion!!, so when I book onto a club site I can remove the signage and then stick it back on before I get on site or leave it.
I would prefer to have wraps and decent signage but for this set of circumstances I cannot see how I can avoid using them.
Rob