[Avodah] Barukh Hu Uvarukh Shemo

[David E Cohen]

Regarding "barukh hu uvarukh shemo," R' Micha Berger wrote:
> Granikim don't say it because the only "Hu" one can give a berakhah to is
> "Shemo". Once one distinguishes between the two, "Hu" refers to the Ein
> Sof, for Whom the concept of berakhah is meaningless.

How, then, are we to explain Tehillim 72:18-19?  (For those without a Tanakh
handy, these are the last 2 pesukim that we say each morning immediately
before "Vaivareikh David.")

I have an answer to my own question, but I don't know how strong it is.
Since Tehillim is structured as poetry, it is quite common for it to say
essentially the same thing twice through the use of synonyms.  Thus, this
sequence of pesukim doesn't necessarily infer that there is any distinction
beween "Hu" and "Shemo."  The simple phrase "barukh hu uvarukh shemo," on
the other hand, would imply this.

I think that the question is stronger than the answer, though.  Can anybody
think of a better answer?  Also, are there any other pesukim that express
the sentiment of "barukh hu uvarukh shemo" where my answer would not be
applicable?

--D.C.