To simplify the discussion letīs narrow our attention to the extended-woofer only.
Above 150hz this woofer operates alone and itīs the transition between this extended-woofer and the midhorn at 850hz thatīs of interest

Another extreme example would be the old 4355.
The 12" midwoofer is mounted right beside the midhorn. The midwoofer is roughly 13" off center compared to the midhorn.
Several people reported this baffle-layout messed up the dispersion and imaging characteristics of this speaker...

Compared to the Everest the woofer is much more off center compared to the horn and the crossover is at 1200hz (4355) rather than at 850hz (67000). Both would have a negative influence I guess. But where about is the threshold of what is noticeable or not?