It's probably good for you that your agent wasn't the listing agent. That means he's working solely for your benefit, and not splitting his efforts on your behalf and the sellers.
I'm afraid that is
NOT TRUE . . . . fortunately !
Just because the Agent that showed the property is not the Listing Agent
DOES NOT automatically make him a Buyer's Agent. That can only happen IF the Agent and the Buyer enter into a "written"
Buyer Representation Agreement.
Selling Agents can be
Sub-Agents of the Listing Broker, still indirectly representing the Seller or (as is the case in Vermont)
Brokers Agents (representing the Listing Agent). ONLY if they have an Agreement to represent the Buyer as a Client, do they become
Buyers' Agents with all of the Fiduciary Responsibilities that you allude to.
It is critical that you NOT create the impression of being someone's Agent when you are not, as you may, inadvertently, take on many of the responsibilities WITHOUT any of the benefits under a concept known as
"Implied Agency" which creates the worst of both Worlds.
In this business it's always important to know "Who" you're representing, and
IT IS NOT the Buyer unless there's a "written" Buyer Representation Agreement.
As an aside, I just recently had one where the Buyer got shorted about 1000 Square Feet of GLA on his purchase and wanted to sue me, the Selling Agent. The Listing Agency had been sloppy in accepting the Seller's GLA for the property. I was simply the Cooperating Broker showing the property as a Brokers Agent to a "Customer" . . . . NOT a "Client". I had disclosed this to the Buyer early in the process, using a standard Agency Disclosure, so I just re-directed his energy and hostility toward the correct party - NOT ME !
When it came time to sue, the Buyer just sued the Listing Agency and they paid him $15,000 or $18,000 to make him happy(ier); and then they started taking their own measurements to put in the MLS and stopped relying on Sellers' data (a know-it-all insurance Agent who should have known better). I'm happy that I didn't need to get involved, and my pockets didn't get emptied out due to someone else's incompetence.
I have enough trouble obtaining accurate information for my own Listings without having to double check those of others. Had I been a Buyer's Agent, those sloppy GLA Measurements
could have been MY Sloppy GLA Measurements. Enough said ?