If the seller has the floor plan and wants it displayed then yes. It is difficult to sell a home off of a floor plan. You can always ask your REALTOR to video the home if you are trying to buy a home long distance.
No. They are not available on the MLS and that is where I get 90% of the information about a house I am showing. As a listing agent it might be nice on flyers left in the home for buyers agents and buyers to pick up.