Personally I would prefer Scotland to have its own currency in time and have no qualms about voting yes for this reason - but this is the white paper put forward for the referendum and its the uncomfortable (and probably not well chosen) terms on which the debate has to be had. I'm just explaining the attitude of the majority of yes voters toward the issue.
It would be fair to say a basic lack of trust means its a non-issue for a good chunk of voters. Of course the average voter is not an economic expert and as the facts are being lost a fog of propaganda from both sides, the swing in favour of yes in recent weeks (despite Salmond's drubbing over the currency) suggests undecided voters have adopted the attitude that it can't be deciphered - "its not the currency but whose pockets it goes to" becomes the focus.
The reason the currency union issue is only being seen this way is due to the way the Better Together campaign has handled itself over the past two years. If it had been less aggressive and hyperbolic this issue would probably kill independence dead, but because of their conduct it isn't being seen as an isolated policy of the main parties. Instead its viewed in the context of an ongoing attempt to avoid the disastrous impacts of independence for the British establishment. The largest economic cost for the rest of the UK to consider when we vote yes is the one that Westminster is truly terrified of - the £20billion+ new base to keep a nuclear deterrent in Britain. The cost of moving from Faslane may reach a point where they would have to consider the future of Britain's nuclear weapons program altogether.
