The extra 10% would be split up as 6% max as seller concessions towards closing costs, then the remaining 4% would come off the principal loan amount. 

That will cost extra time and money to remedy.

The product is available but the pricing is not as pretty by any means, you’ll be looking at a rate 1-1.5% higher and possibly an extra .5-1 point in cost right off the bat. 

Experience with STRs - they at least know or can understand the extra steps it takes to make ready the properties, including photos (cleaners hate taking photos, I've found, even though it protects them from being blamed)2.

You keep the extra ticket cash. 

He told me that given that I was still fairly new to investing (5 years) that I should consider the benefits of having the extra cash on hand either for emergencies or for future down payments on additional properties.

I would be curious what the financing folks in the group would think about @Elizabeth Brown looking at a DSCR loan instead of using her HELOC. 

People have very short attention spans now, and making them jump one extra hoop to book your home is an additional hurdle you do not need. 

Most folks would prefer to drunk drive home from the games unfortunately.

Lots of great insight from the folks above.In my experience as an investor and multifamily lender in the twin cities, I would simply say there is no "right" answer.