Pulling all stops and going above and beyond is what I would expect. I would also expect you to slow down the effort after the trial period.
However, if you prove with all the stops that you are worthy of the premium, I will know what you are capable of when push came to shove and that is what makes you worth it.
Yeah, that's a likely thing to expect, though I hope I'm personally not the kind who likes to slow down (unless I was truly going at an unsustainable pace ;). I like to think I'm motivated by excellence, though of course that's for others to decide.
This can conflict with most management styles, those which favor uniformity. Hence my choice of companies I work with.
However, if you prove with all the stops that you are worthy of the premium, I will know what you are capable of when push came to shove and that is what makes you worth it.