The credit relationship is between you and your bank (or your credit card issuer), not Leatherman.

Leatherman's ultimate recourse would be take me to small claims court, argue I lied to the credit card processor to win the chargeback case, get a judgement, and if I don't pay go after me for collections. I doubt they'd have a good time given they sent me an email refusing to do a warranty repair and I based my chargeback on that.

Of course they'd have to come to my home jurisdiction and all that. While in theory if they prevailed I think they'd get triple damages, they also run the risk of losing and throwing away even more money and also angering Visa who considers my bank's ruling in my favor to be final. There were a few companies that had the genius idea to go to small claims and Visa got upset enough that those companies can no longer take credit cards.

In most cases it is better for the merchant just to eat it and write it off as a loss.