Committed relationships with a single woman (LTR) and non-committed relationships with multiple women (Plate) have been discussed a lot on TRP, but I don't ever recall seeing someone addressing the concept of committed relationships with multiple women.

Theoretically, a man who engages in an LTR with say 2 women, would have (a hint of at least) the abundance and dread that people who do plates have, while also having the element of a stable long-term relationship that attracts a subset of people, but it comes at double the effort or more. What do you think? would multiple LTRs work out in practice?