If your transaction is Swiss only, you have nothing to worry about.

a payment made on a swiss bank ( electronic or with a pink payment slip ) is much better proof and will give you better protection than paypal.

If he doesn't send the item you just have to report him to the police. you have proof of purchase ( ebay ) and payment ( your bank transfer )

I have done many transactions with swiss sellers and buyers based only on trust.

they even send you things first and expect payment later.

paypal is good protection when you buy from abroad.

Also if you pay with paypal, he will have to pay the paypal fees, so it is much better for a swiss seller to have the money sent directly.