To Scotchguard or not

Our new Smith Brothers of Bern sofa was delivered this morning. We choose not to purchase the Guardian protection program from the store.

Would it be a good idea to use the Scotchguard (after a test spot to check for color fastness)? I have never treated a large item with it before.
No pets or young children to deal with.

Absolutely! Buy a few cans so you have spares. Spray it in a well-ventilated area, and re-apply in a few months when water drops no longer bead on it.