Most jump blues players are jazz players too so they approach blues changes with a wider range of harmonic tools. You’ll need to ensure that you can switch effortlessly between Major and Minor Pentatonic scales (ideally both in shape 1). This will enable you to reflect the minor tonality implied by the IV7 chord of the blues and play phrases across the changes. You should also experiment with the Dorian Minor 6th Pentatonic (R-b3-4-5-6),
and the corresponding root Mixolydian scales over all dominant chords (I7-IV7-V7). Don’t forget the importance of chord tones and arpeggios too, as they feature strongly too.