>>59053509At the absolute most, this would be fine. Occasionally filling in the EOP Ruffians wouldn't be the worst thing in the world, but holy fuck they should should NEVER EVER get into the habit of live TLing everything they say. I've watched way enough ENs doing that to know it would get infuriating fast and completely break the pace of conversation.
Either stick with 90% English or 90% JP during collabs.