OK, so continuing my conversation with myself, if I'm correctly interpreting the graph below from the
@hardisj IN-8v2 review it appears as if the limiter is mainly limiting the lower frequencies produced by the woofer which only plays up to 280 Hz and has its own separate amp. That strikes me as evidence that high passing at 80 Hz for integration with a sub would reduce the load on the woofer's amp and therefore reduce the need to limit the woofer's lower output and allow the speaker to play a little louder before the limiter kicked in. But I'm far from a technical expert on this issue so I defer to those with more expertise.
EDIT: I was so focused on the low end that I totally missed looking at the far right side of the chart to see that the limiter also reduces high frequencies. Since the tweeter covers frequencies above 2.8 kHz and has its own dedicated amp that means it will still hit the limiter even if the speaker is high passed at 80 Hz for use with a sub. It seems only the midrange covering from 280 Hz to 2.8 kHz continues to play cleanly without its separate amp being limited even after the woofer and tweeter reach their limits. Bottom line is that there should be no expectation that crossing to a sub will allow the speaker to play a little louder without the limiter affecting overall sound quality.