[mikedh]

I assumed that too until I read this slightly grouchy but very interesting thread: https://github.com/KhronosGroup/glTF/issues/1515

[miohtama]

Did they in the end settle with quarternions as glTF is an export format (same playback on different apps) and not an authoring format?

[skocznymroczny]

Rotations in GLTF are specified with quaternions.