I know a few guys that are mobile & it doesn't present a problem for them. I am sure the positives out way the negatives, but it depends on your own circumstances & preferences. I am workshop based & I too get annoyed when my laptop battery dies. I try to make sure it is plugged in as often as possible, but inevitably it sometimes gets overlooked.
For my money though, I wouldn't be without Pico & the benefits that the tool delivers.
Go on, you know you want to!