Has anyone treated their cat for a rattlesnake bite?

My cat Myles was bitten on the paw last night by a Rattlesnake. He spent 3 hours at the emergency vet getting blood work, fluids, pain medication and other treatments. The vet was not encouraging about using the anti-venom as many cats have even worse reactions than from the bite itself. At $850 a dose and the high risk of complications she felt I should just take him home and monitor him along with some heavy duty opiate pain medication. He is doing well enough this morning, eating, drinking, just had his pain medication and I am massaging and treating his swollen paw/leg with hot compresses as per the vets advice. The risks still include kidney damage and necrotic tissue around the bite site. Has anyone here had a cat that recovered from a rattlesnake bite?