Spilts/cuts on the mono canvas

Yeah, sometimes though, the splits are inevitable. I've seen mono billfolds have little cracks in the canvas on the bottom of the fold...once it does this it can't be repaired since it may cause it to crack further.
 
I think using a leather conditioner can help to prevent cracks. It usually happens to older bags and accessories. Dry climates don't help either. I have heard my SA say before to use the Coach leather conditioner on the canvas, although I have never tried it myself!