Clef transposition in iPad app

When viewing a score you have the ability to change its key - why not its clef also? This would be a fantastic feature for me especially as I play the euphonium (treble Bb) I often play trombone parts (bass clef concert pitch) and this would make it seamless.

Just a thought, but it would be a greatly appreciated feature by many in the community

Best wishes,
- Kyden