You've come to right place to ask such questions.

I suggest a leather sporran for daywear, perhaps a freelander. Fur is normally ( from what I have seen) kept for semi-formal and formal occasions, and pipers.

As for the sporran height, I keep mine worn just below the buck, so I can have freedom of leg movement and far more comfort when the sporran's swing is tightly controlled. Suffice it to say that a sporran's swing can be painfull if the sporran is worn at exactly the wrong height.