I'm a final year Degree QS student, so I'll answer based on what I know and experienced.

1. Think of QS as the construction cost manager & advisor, we measure, calculate, manage and prepare paperwork on a project. Depending on which firms you working at, if it's consultant firm, you're required to handle the project costing and budgeting for the client from pre-tender to post-contract (end of a project) and finally prepare a final account for the whole project. If you work in contracting firms, it might be the same job scope, and measuring the exact quantity is critical for contractors as every cent counts and all they care is the profit margin.

2. Usually, yes, unless you can hire few QS-assistant under you. Don't worry though, technological advances would help in the future.

3. From hearsay, and the reason I'd studied QS is because of the high demand for QS in the construction industry right now. But mind that the output of local QS graduates from universities and colleges are large in numbers too currently, which might inturn saturate the industry soon. However, I don't think you'll need to worry about getting unemployed as long you don't look at the income figures. Just my 2cent.

If what I wrote reflects inaccuracy or error, please do correct me.

I'd not been exposed to the industry very much yet since I'm on my studies and with just 1 year of experience in Contractor firms during internship. What you stated do make sense of course, but QS badmouth the Ar. rather than Ir. based on what I'd experience in the past. Btw, keeping the professionalism and competency is the important thing to do.

Wasn't referring to field of work but the person. I know QS can't do valuation on technical part unless they are experienced and exposed M&E, but in the past project for PNB I'd been to, the M&E consultant...well I beg to differ.