[eklavya]

That would make sense if protobuf was complex, bloated, slow. But it's not, so the question should be why not use it, unless you are doing browser stuff.

[9rx]

If you are going to use it elsewhere, why not use it for browser stuff too?

[eklavya]

I would advise against it. Too much friction, try it, maybe you will have a different experience than mine.