Of the 53 faculty listed on the website, only 5 are in clinical - and at least one of them is not trained as a clinical psychologist (he is an experimental psychologist). I think you would get excellent research training here, but the clinical training is somewhat more of a question-mark.
My understanding is that the clinical training was quite disorganized in the early years of the program, but that they have slowly gotten their act together in terms of securing external practicum sites. Yet I would still be concerned that there are not a large number of faculty in-house who can actually provide clinical supervision.
As for the person you are both referencing, he is an up-and-comer. However, like joetro said, junior faculty are often not offered tenure at schools like Harvard, Princeton, or Yale - so depending on how many years he's been there (I think this will be his third or fourth?), he may be moving on while you're still in school.