Well,we have one Yorkie and a Pug/Chi mix - they are both elderly with medical issues and have potty problems.
We have laminate in our home, as long as the laminate is installed properly it is ok with potty issues, naturally I have never noticed issues with scratches since as you have said they are not exactly huge animals
However, laminate is very different than wood and if water/ pee is located in spot over and over again we have personally noticed a bit of warping. Lovely.
We also made the mistake of putting it in the bathroom as well, while it is fine through out the rest of our home the bathroom floor needs to be meticulously dried when getting out of the shower
If I could do it all over again, I would chose wood floors!
This is only my experience, I am by no means a floor expert! (My disclaimer
)