I like having the long hose in all situations. Let's assume a single tank dive on a somewhat shallow wreck, but there is current, and I need to get back to the boat. So it's a thirds dive. OOG (first stage failure) at turn point and now we have to swim back to the exit point. Our DIR gas planning has us with enough gas to travel back to the entry point and do a min deco ascent, but swimming in a current with a 40" hose is not going to be fun.
What advantages does a 40" provide over a long hose?
I have muscle memory for dealing with a long hose and especially since I almost always dive with my can light, even in a single, I don't see a reason to change things out.