Any safe way to not use bytemuck?

Hi, I'm learning wgpu through the learn-wgpu website. In the Buffers section they use bytemuck to send Vertices to the gpu in a buffer. I try not to use other dependencies if it's not required or if it doesn't save me a lot of time (like for example I'm not going to rewrite glam or other math library).
I tried looking at solutions and found transmute, but I have read that it's just not safe and therefore not worth it. Is there any safe way I can do it without bytemuck or is it really needed crate for this use case?