Yes, generally use during PCT would be called for on account of bad planning rather than being an as-a-rule good idea.
To some extent though I suppose this is another one of those things where a course-correction winds up being in some cases a slight overcorrection.
Way back when, the standard or perhaps universal thing was to use HCG post-cycle. Part of the reason for not using it during cycles was the atrocious dosing method used: typically 5000 IU at a time.
At the same time as correcting the dosing, I said to use the opposite approach and use the HCG during the cycle to maintain testicular function, rather than losing it (or having it reduced) and then having to overcome that obstacle as well as having to recover hypothalamic and pituitary function at the same time. And I pointed out that HCG adds to suppression to some extent at that time as well. This is true.
And it's true that doing cycles the way that I have recommended to do them ordinarily results in recovery that does not give a miserable period of low androgen levels and having to struggle back up from there.
However, many users still choose to do things where, quite predictably, they find themselves with awful T levels post cycle for some period of time.
If that is the case, then yes, moderate dose HCG use can keep T levels normal but not so high as to make recovery of LH production impossible, particularly where a SERM is used.