would it be a waste of both our time for me to submit to the Chum Bucket if...
1) I write historical romance, which doesn't seem to be one of your areas of interest
2) another agent at FinePrint already requested the full manuscript?
It's the (2) rather than the (1).
When you query, you should query one agent per agency at a time.
If that other agent says no, you're welcome to query me, although you're right that's not one of my categories. But, you never know. The worst thing that can happen is I'll say no.