Radical toe in once more

Hi all. I have bi-directional floorstanders, two way speakers with identical treble and woofer on the front and the back. Half of the sound goes to the front drivers, half to the back.

The toe-in of this type of speaker is very influenced by how the back sound wave and the reverberant sound behaves. These speakers often sound good with radical toe-in due to better room acoustics with a longer back wave towards the corners.

This is a huge topic, and my question is more restricted: what happens with the front firing sound?

Is there an "inherent" problem with radical toe in, when the main sound from the front drivers cross in front of the listener, instead of the more conventional setup where the crossing point is behind the listener - and if so, what?

Is this (potential) minus factor in fact low, if the listener is just a foot or so back of the crossing point?