Pool setting: "Action On Service Down" set to "Reject" for loaded Pool - bad?

> Am I characterizing this correctly and do my assumptions seem sound?

Pretty much.

> What drawbacks to using "None" over using "Reject"?

None allows the chance that the pool member may still service the connection even though the monitor is down. This may work. It may not. None will be slower than Reset.

> How do I know how long a request or connection will remain on the DOWN-ed server if it doesn't come back up? Is that a TCP timeout?

It will be the TCP Retransmission Timeout, not the TCP Idle Timeout

> Anything else I'm missing?

Not really. Just don't use Reselect unless you are loadbalancing stateless routers.