Don't get all riled up about it. If you and your customer prefer the Babicz, that's fine. I'm the opposite, I think the Babicz is unnecessarily fiddly. To each his own. I was only wondering about the string spacing on yours. If your customer had wanted narrower string spacing and a Babicz, you could install studs.
I'm sure Babicz is a good company, and I know Hipshot is. Frankly, I'm skeptical that a substantial bridge casting could collapse on a gig, but you never know, rare failures can happen when you have produced thousands and thousands of bridges.
Here's one of the builders I was referring to:
Serek Basses