I saw a photo of the navy blue Nubuck phantom and was doing some research on here regarding care and maintenance. It seems that some think Nubuck is durable while others consider it to be a lot of maintenance so I am really confused. Could someone please help shed some light? I have only seen this bag in photos and don't want to go to the trouble of tracking one down if it requires a lot of care as I wouldn't want the stress of a high maintenance bag. Tia!