If I was, wanting to convice a boss, and I am one, there is one reason I would use.
You could say that this gives you more mobility for work, meaning that you could infer that you could take work home over night and on weekends. This would mean that you would actually have to do some after hours work.
Us bosses love slaves who love to work, makes us feel warm inside knowing that someone wants to make money for us when we are at home relaxing.
And, so what if you use it for personal uses also, so long as you are not searching for adult porn.
Best of luck with convincing the boss.
Paul