hCG is suppressive in a sense, however Dr.'s have been known to prescribe a course of injections for stimulation of the gonads in hopes of "jumpstarting" a natural production of hormones. As such, Clomid therapy would only show temporary improvement, and as soon as discontinuation of the drug, hormone levels are likely to balance back out again, which is a good thing I believe.
Likewise, it may not be a futile attempt, especially before crossing over to a complete replacement protocol.