[Avodah] Erev Tisha B'Av on Shabbos, when do you take off your shoes?

[Marty Bluke]

The Rama is clear, after Borchu you take your shoes off. This is the
minhag that I remember when I was growing up and none of the acharonim
(MA, Taz, MB comment on this).

However, recently a new minhag which makes a lot of sense has evolved.
People go home after mincha, eat, and then at Tzeis Hakochavim say
boruch hamavdil, take off their shoes, change their clothes and then
go to shul to daven maariv. This seems to work better then the old
minhag of taking off your shoes in shul. The question is, why didn't
the Rama advocate this minhag? One answer is that in the days of the
Rishonim and Acharonim it was hard to get people to come out to shul
at night and therefore if people had gone home they wouldn't return
for maariv. You have to wonder is this really true? Was this the case
in Eastern Europe 100-150 years ago?

Any thoughts on this evolution?