One thing I love about full-mask sporrans is their versatility - you can wear the things just about anywhere without raising any (or many) eyebrows.

Having said that, though, I don't feel they're really for me - you don't see kilts often around these parts, so people aren't that familiar with the tradition - and having a full-mask sporran can be a bit shocking/off-putting to some. In addition to that, my wife is essentially a vegetarian and getting a fur sporran through the door is difficult enough - you add a face to it and it would be just about impossible!