The consequences of Scotland joining the EAA might reduce any concern about travel and work mobility. If they did not get that the Scots would find themselves in an impossible situation. The visa restrictions on nationals from outside the EU/EAA are severe, as anyone from the US will discover if they try to obtain a work visa in the UK. I would guess that the UK Free Travel Area would be extended from the UK and Ireland to include Scotland, otherwise there would have to be border controls such as there are with the EU free travel area.
However, the EAA is not the EU and Scotland would be cut off from participation in the decision making process within the EU which has important economic implications. Norway and Switzerland are well off countries who prefer to remain outside the EU. The same is not true of Scotland. Scotland does not have a huge sovereign wealth fund nest egg like Norway, not has it cornered a profitable part of the banking and pharmaceutical market like the Swiss.
Similarly using the Pound may be convenient, but Scotland would have to accept that they have no say in the management of the currency. That would be a bit of a turn given that UK economy was from 1997 to 2007 run by a Gordon Brown and later Alistair Darling, both Scots who are rather keen on retaining the Union.
The acceptance criteria for accepting nations into the EU is meticulous and would take some time to complete. It would be dependent on a lot of constitutional issues being resolved - the terms of the divorce. Moreover, if Scotland has an easy accession to the EU that will encourage The Catalans of Spain to press their case. This is a very sensitive issue in Spain and they will try hard not to let this particular Pandoras box be opened.
I would not assume that the matter of North Sea Oil fields is as clear cut as the SNP imagines. There is the not inconsiderable matter who paid for the infrastructure to extract the oil in the first place and that was clearly the UK tax payers as a whole. Moreover, where do you draw the line of the border out into the North Sea or should this asset be divided up on a per capita basis, consistent with how it was financed?
All of this would have to be resolved and this uncertainty will also be taken into consideration by the Oil companies when making decisions about future investment.
There is also the big question of the National Debt and how much Scotland should inherit. There are different ways to work this out. None have been agreed.
The issues just go on and on with no clear answer.
The agreement so far is for only one thing: that Scotland should vote on the question of Independence.
That will either give the authority (or not) to the politicians to start negotiating to come to agreement on a whole raft of issues.
This will keep them occupied for some considerable time.
The Scots will probably make their minds up influenced by both sentiment and whether they think they will be better off economically. However, there is no getting away from the fact that they are a small country next to a larger country at 5.3 million, they are just 8.3% of the UK population and are thus overshadowed, not least economically. Independence means giving up a great deal of political influence in the UK for a chance to follow the rather rosy future painted by the SNP.
Though I am sure, independent or not, Scots will still find the road to England an attractive one for the ambitious and those with enterprise and talent.
The countries will remain close, whatever the outcome.