Well respected in all circles - including IB, its quite funny actually, in an interview recently, I got asked: "Can you give me a time where you have had to work with large amounts of data or lots and lots of figures?"
I came up with an answer in my head, "I study Actuarial Science..." I was about to continue when the interviewer cuts me off and goes, "Oh, that just about covers it then." And he moves on to the next question! (Got the offer too!)
Wages? Worse than IB short term, better long term (Unless you pull off being the super trader,) better job security some would say.
Enjoyability? Contingent on how much you like maths - alot of hard work, but very diverse and varied, quite a lot of autonomy when you are a senior actuary.
Prospects? Excellent.
Employability? Excellent. If you get a 2.1/good exemptions.
I study Actuarial Science at City - nowhere near top10, in fact, its around top40, and I've not failed to get through to a final round before. I would say its a very highly respected course.
Alot of people say maths is better - but I would disagree slightly, depending on where you want to go in future, I do ALOT of risk analysis/modelling work, which is more useful in something like IB-Middle office roles. Also, those people who say actuarial firms prefer students with maths rather than Actuarial Science are just plain wrong. If you get all 8 exemptions availiable to you, you will be very attractive to actuarial employers - at the end of the day, almost every firm just wants you to get fully qualified, and they put ALOT of money into getting you there. So if you've already taken the first massive leap, you are very employable.
However, I've got to be honest when I say, in every AC, the story is always the same when you go round a room - Oxbridge/LSE/IC/Warwick all have a huuuuge prescence - I've only ever had one other City student with me at an AC, and she was on Actuarial Science.