The argument for try...finally, using, lisp's (with-open-file...), etc. is that it makes it clear that there is 'invisible' code at the end of the block.

I suspect that is the reason for the 'scope' sugar in D. Its advantage is that it is more light-weight; its disadvantage that it does not stand out more. I guess it depends on what you think your audience can handle which is better for your case. I do not think there are many programmers that need java's very explicit try-finally because they cannot grasp e.g. what D provides, but I also have been surprised at times by the, let's say, intelligence, of programmers I met.