I have been using Fenice for a long time, and the durability have been good on some leathers, other not so good. On dense chrome tanned leathers very durable, but I've had peeling edges at folds on wallets where I used vegetable tanned cow leather. I will evaluate some brands with and without primer other with just edge paint (Where it's less common to use a primer) I will also experiment with different heat, different edge finish to start with. (And of course if the producer have a SOP ava