I was curious about all the $50-100k duplexes in Wisconsin and toured about 20 of them.

As the title of this post mentions, Buyer should be aware that now the MLS requires Buyers to be in a agency contract with their agent before scheduling any tours.

The tenant toured my place, said is employed (+i googled) , came across to me as very polished  and came to tour the unit with her mom.

I have toured many and they tend to be janky and your few hundred in cashflow will get eaten by cap/ex. 

We are hosting a tour there on November 2nd, and Kathy Fettke will also be there.

I've worked exclusively with builders on for-sale subdivisions throughout Southern CA for the past ~20 years (thousands of new homes) and cannot think of a single time one of my builder-clients has retraded on price after a third-party inspector toured on behalf of a buyer.

I visited Kentucky Artisan Distillery during a bourbon trail tour for my bother birthday a few years back.  

Or call one of the people who have toured the house and ask them for their opinion on the home.

I do agree about adding that second bathroom, that's a huge consideration when folks are touring places. 

We are actually having one our premier events in October called Junkers to Jewels, a 3 day in person classrom and bus tour to learn about flipping, rehabbing, estimating etc on actual deals with local investors.