Both together sounded muted. Not sure if always that way or just how I wired it. I mostly focused on no buzz when touching a pickup (bisonic just had 2 wires and no ground (unless I missed it) while h22 did have a ground. But there was a lot of area to play with placement for h22 that I didn't do.
Still happy with how it worked out. Flipping between 2 gives different tone + varitone. Stock tone knob didn't do much but don't think I kept it with non sidewinder. And it's finally done besides lighter tuners. Sat on adding 3 way switch forever as worried to drill under pickguard (not a woodworker).
Here is stock vs final for fun.
And pic of how far one could place it.
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H22 definitely a great pickup to add to any bass. And guild bisonic too.