I'm not a QS, but two good friends of mine are, and I seriously considered joining them, so have the done the homework.

It appears to be a very good job to get into. They work very hard for their money, but they have a lot of it. As above... being whinged at was what put me off it, the phone never stops ringing. But they enjoy the job enormously.

Great deal of responsibility, but a good deal of job satisfaction if you're good, ie meticulous about things and a real do-er rather than a thinker. If you avoid opening your mail to see bills, I don't think it'd work

Good Luck!