At work I plug in my laptop, and have no problems with it, as all I am doing it for is to use a network printer direct. not going to connect to the Windows server just to print, so CUPS just works direct a lot faster. As well I am remote control for the IT provider, I often get a call to go and change tapes for the off site backup, as they either need to reinsert or the regular driver ( Jay) is running late, so I go and change tapes and leave them for him to collect the next day. Simple as there are 4 days of tapes there for use, just in case. The backups go off site, along with a hard drive kept elsewhere.
If somebody had to bring up the rule of not plugging in a phone charger probably most of the staff would be on strike the first day. All good and well, but if you do not actually have electricity at home and have a cellphone.......