You are right, PE in Bain -there is an specialized team for this- is one of the taugh taugh ones.
In general, something that will help you pick good engagements if you are concerned about work-life balance is the lenght. Longer engagements are muuuuch better. Furthermore, it´s also important to find out people/leadership that share those values and work with them.
Finally, I could not agree less with the comment of "if you have those concerns, this is not the job for you". I think this is a horrible comment. COnsulting is an amazing and super interesting job, and it´s perfectly fine to have aspirations to go home and have dinner with your family.
Hope it helps!