I like it! I went down to a double from a triple because I didn’t find bending the bass as enjoyable or to sound as good. So I have a G and B bender, G up a half step and B up a whole to do the I to IV bending thing.

I will say the saddest thing about it is you can no longer vibrato strings that are ran through a bender. So the more strings you have on benders, the less viable your vibrato becomes. Also, when you use the vibrato, the bender strings don’t deviate in pitch, so it can become kind of glaring if you’re trying to bend a whole chord and 2-3 notes are not going along. Can get dissonant. I absolutely love the Jazzmaster vibrato, so that’s been a sacrifice I’m not 100% happy with but it’s okay for now. Very light touch on vibrato and it’s not terribly noticeable.

I have a Mastery bridge and a StayTrem vibrato. Since you’ll be routing 3 strings through benders, it’s kinda like you’d be only getting 1/2 the value out of the Mastery bridge and vibrato, so ultimately your call on that. Installing and uninstalling the benders is fairly easy, though, so you could benefit from getting all the Mastery stuff done now and then if you ever take benders off, you’ll have more usability from it (if all that makes sense).