Forgive me for not reading through five pages of responses first, but every opinion still counts, so, "it's fine". The reason it's fine is because of the sparse instrumentation. If this was in the setting of a thirty-piece orchestra, maybe not fine. The fewer instruments are playing, the more sonic space each needs to fill in order to avoid the pitfall of sounding weak and anemic. Guitar trios suffer greatly. During solos the only reference to chordal changes as well as the low register is the bass. Fills are not only acceptable, they become mandatory. If the guitarist is clever and can fuse enough rhythmic clues into the solo to maintain coherence, you're a step ahead. You still have to play your butt off. What you play in this situation is just as, if not more important than how you play it. Choosing which parts to accentuate at any given point and which parts to skip can create the illusion of all parts being present, although they aren't. Listen to Joe Pass or Tal Farlow play solo guitar. They give the impression of two guitars playing simultaneously (or at least a guitar and a half). If the guitarist and bassist work together complementing and supporting each other, the holes are filled by the audience hearing what isn't fully there but is hinted at. Think of paintings where the background is fuzzy and you still get the effect of distance and spatiality. They aren't in 3D, yet you perceive them as such. The same is true for aural tricks. Convince the audience that what they expect to be in the background actually is (even though you know better). Sorry to be longwinded. Hope this helps.