People who believe everything they read will tell you it won’t work. Of course they love to read manufacturers literature where the OEMs have to satisfy every customer including the teenager who wants to play at 130dB.
If you listen at 80 dB, you’ll be fine. Realize you won’t be able to turn it up to 100dB when others come over, and I’m fine with that.
That said, I much prefer the higher sensitivity (not efficiency, sorry to have to correct you) speakers. I have 96 dB sensitiveity non-horn speakers with very linear response and I think that’s about as good as it gets...
...sitting here listening to my 2 wpc decware amp.
I will add that before you invest in this speaker listen carefully to make sure you aren't missing something. For example, sometimes people hear a wonderful midrange and forget to check for bass and dynamics, the first two things to suffer at lack of power, lack of current, lack of power supply, bad power cord, etc.
Jerry