Surprised that there is no answer to this.
Am I the only one attempting such a thing?
I was going to ask a follow up question - may as well chuck in now - how does OSMand+ run under this?
Trying to figure out if there is any point trying to run it on the chromebook - although it has a better screen/keyboard than the tabs, OSMand's offline route editing functions are a bit limited and the chromebook's internal storage is in any case somewhat restricted.
I could plug a USB pen storage thing in for the maps and other stuff but that may possibly cause complications.
Maybe I'll stick to the tabs on the road, which are in any case easier to recharge, including from powerbanks.