Yes, but Bowie machines four "locator studs" (one in each corner) that correspond to the four holes in the JPoint's base. Personally, I think it is simply a matter of there is not a whole lot of precision manufactured into the JPoint. Your point about the retaining screws is valid, certainly (and my JPoints do indeed feature button heads).
But at the end of the day, the JPoint set-ups I have are sufficient. They are plenty durable for my retired carry lifestyle, they are adequately accurate once dialled-in, and while re-zeroing after a battery change is an annoyance, all it takes is a bit of time and ammunition.
I have both in abundance…
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