I ran various model Alon/Nola for years, certainly a different presentation vs box. Open baffle need to come out from front wall and likely need more absorption on that front wall vs. diffusion for box speakers. I actually preferred the way they imaged and did sound stage vs. box, more spaciousness around individual performers. Never could get used to the boxed speakers I used subsequent to the Alon/Nola, always sounded closed in to me. Now use horns which I prefer to the open baffle.
Listen to a friend's setup using Spatial's from time to time, still like the unique sound of these open baffles, perceive no great issues with bass.