Well, those Coco Bolo topped ones you've seen before are cool, but they take up a HUGE amount of space behind the scenes because they mount in such a weird way. We're doing another guitar with 2 buttons for scrolling that mount in a regular way with a washer and nut, but we are putting a wooden cap over the push button. This is the test piece:

for scale:

and what's under the hood:

We can make the cap smaller if you don't mind seeing the nut a little bit. Let me know if you like this approach, and I'll see if I can cram it into the original layout, or near to it at any rate.