"I am the sort of person who doesn't believe promises and idealism"
Gosh - you must have a lot of trouble voting in any election. What do you do, vote for the current government every time?
"I can almost predict what side people are on. Most of the people I know who went to private schools are no voters. Most people I know with comfortable lifestyles are no voters. Hardened labour loyalists are no voters. Most of everyone else is yes."
That's not my experience at all. I know lots of affluent people who are planning to vote yes, and low income voters who are planning to vote no. If I were to try and identify a trend, I'd say that very low information voters are more likely to vote no - but that's just my personal experience, can't claim it's representative.
"Personally I've never knowingly met anyone who was in it and I'm not aware of there being any link between Better Together and the Orange Order."
Err, the fact that you, personally, don't know anyone in the OO is irrelevant. There are plenty of people who associate themselves with, or have a cultural attachment to the OO. They are an officially registered No campaigner. There are a lot of people who will vote No for nationalistic reasons.
"I haven't heard anyone from BT condemning them."
Jim Murphy has condemned them vociferously. Just goes to show that he there are troublesome parties on both sides.
The BNP and Britannica are also registered No campaigners. That's just a fact.