Guys, thanks for the chatter, it's helpful to me, as an utter non developer to get input from people who know what they're up to.
I'm going to have a look at implementing some sort of click to downloadlink today. If it works, great, if it doesn't, never mind. Much further down the line I'd like to package it up as an actual app, if that's within the realms of my limited skill set.
As a side note, while looking through something for someone else, I spotted two nice bits of code I'm also going to see if I can implement. That's not to say I'll be capable, but it's going to be fun trying
One is a qr reader which, judging from the way it behaves on my pc would work equally as well via the mobile camera (got to check that) and one is an import key feature which allows you to decrypt BIP38 encrypted private keys.
As I say, I'm far from convinced I'm up to the task, but it's going to be damn good fun trying to make it work