See, I am one of those disappointed theorists who spent the last year(s) analyzing Jo's "see it once - see it again" series patterning, whereby if a situation occured once in the series, it was very likely we'd see an echo of it again later.

So the visit to Sluggo's in HBP would have been a perfect precedent for H/H hiding in other wizard/muggle dwellings in B7. But no...Jo had to break my heart.

Red Hen had numerous essays on this topic as well.