It helps to open and account with them, whether your buy anything or not, at least that way they have you the system. I've had a Snap On account for about 45 years or so but never had to deal with them by phone until about 12 years ago. Many of the local dealers all seem to have gone away. The few that are left won't deal with walk on customers. Apparently if your not in their 'territory' they can't sell to you and have no interest in warrantying anything. I rarely bother anymore and just call them for warranty.
Something that's either good or bad, depends how you see it, is that with screwdrivers, they tend to just replace the whole screwdriver rather than just swapping out the blade as a truck will do. If the original is no longer available, the set is no longer complete. I have half a set of rubber grip screw drivers that I hate because of this. My originals were all black plastic handles not rubber that gets slimy when greasy.
I called a few years ago about a replacement end cap for a ratcheting screwdriver and they sent me a complete new ratcheting screwdriver.
I've never had a problem with warranty.
Calling them is faster and they've always sent me a shipping label for returns.