Choral divisi best practice?

In the absence of proper condensing for choral music, I have been known to use both a choir reduction instrument and four individual voices, and then switch between them at system breaks, hiding the set of staves I don’t want to see from that point.

When we are eventually able to crack the condensing nut in these cases, you’ll be able to simply write for four individual parts as normal, and then condensing will take care of the rest.