So they really had no choice IMHO....Welcome to the landlord world I guess.....makes ya wonder why we do this sometimes, huh?

It's always a personal choice everyone has a different perspective.   

In the end, it is viewer’s choice to follow what they think is more reasonable.

There are a couple of things that come to mind, if a payment is missed the lender cares, if the servicer goes out of business or misses a substitution of trustee, the lender cares, if the borrower goes to the lender to try to get removed from the loan (usually to buy another house) the lender cares, if the property gets caught up in a bankruptcy or divorce, the court cares and that means the lender gets involved.

but I borrowed money to use as a downpayment. 

The fear of unknown and the bad potentials, but then sh_t happens and ya remember that we got a choice to lay down and be done in by it or roll-up the sleeves and get to work and be a solution maker. 

No co-owners/borrowers.

Ok yeah we are thinking of getting an investment property loan so we can stay in our current home.If we did the FHA route we are considering on living in the new property for 1 year and then moving back into our old one after the year is up.We are curious if we would get a more favorable rate if we borrowed from our home equity to buy the investment property.Do you have any idea if many investors borrow from their home equity to get started?  

I just wrote an offer for full asking price at 30 day close, with a contingency to extent at BUYERS choice for 30 more days if I don't get an favorable response on the electricity install costs.

Yes they can use a realtor of their choice.