You will get vintage sound from horn speakers all right. Useful for bass, correct exponentially derived horns are hard to get neutral. The purpose as you know is to minimize diaphragm excursion so it stays in the linear range. On the flop side they are efficient, but not as good as quarter wave. In the end, I find the sound fatiguing but you may like it.
Horn speakers for vintage sound
I’m currently looking for budget horn speakers in university that are similar to GIP or western electric size is no issue since it will be in the living room my budget is 5 grand if even possible or might even try build GIP speakers