I may be the voice of difference here.
My wife, my riding buddy, and myself feel that there isn't enough volume to use these with earplugs.
I'm sort of a special case because I already have a hearing problem. I solved it with custom-molded earphones, but that was $300 and another set of wires.
My wife, with normal hearing, uses the max-leight 33 db earplugs with her Sena and claims she has enough volume to communicate and listen to music, but not enough to understand podcasts or audiobooks. She is on an SV650 with much less windnoise than the FJR.
And my buddy, on a VFR (less windnoise) and with normal hearing, also uses custom earphones because the Sena isn't loud enough for him to really enjoy the music.
So you might be OK, but it will be borderline.