That's really the concept behind these cabs summed up quite nice. Having spent many years in studio control rooms, I learned that the most important thing to achieving a good mix is finding the right sonic space for each instrument and getting the right bass tone is critical for this. For me, the best way to achieve a good sonic balance on stage is to make the low end compliment the kick drum (not bury it), push the upper mids a bit, and get the high end out of the cymbal territory. This helps slot the bass nicely in the mix and usually results in hearing yourself better at lower volumes.
The sound where you have super deep lows, relaxed upper mids and bright highs may sound great at home, but I find it makes the bass too "big" in the mix without delivering the needed definition you need to hear yourself well. Without the proper definition, the only way to be heard is to turn up. Now, you've made it harder for the drummer to hear his kick, so he subcousiously starts to play harder. Now everyone turns up and the volume gets out of hand. Slot the bass just right and it really does help everyone in the band ease into their space without having to resort to turning up the volume knob. This is what we've tried to achieve with these cabs.