In the past, I maintained a backup of my primary working drive on my laptop, so that when I was mobile I had what I might need. However, I had to change my way of thinking, and operation as I feared the day that I would lose or my laptop would get stolen and all that data would be compromised. So, I had to change how I did things.
Now when I travel, I maintain no uncompromisable data on my laptop. If I do need to work on a file, or get something, it takes only a few minutes to securely connect my laptop to my network and away I go.
This same connection provides me full UTM protection as I would have from my office. The downside to this is that I have to have an internet connection and it takes a few extra minutes to get connected. The upside is, that the most I will ever lose is the laptop, and they are replaceable. Certainly a good excuse to upgrade.
So, if you are one of those mobile workers, and you keep private data on your laptop, this might be a good time to consider changing the way you do things.