Ask HN: What are your experiences with taking a non-strategic investment?

The Skinny: a Hardware venture. Background: We took a $50k loan to secure patents on our hardware. Moving Forward: The gentleman who gave us the loan has offered us the $2.5M we need to finish product development and get to commercialization. But he has no background in hardware, engineering, or tech. He is not a strategic partner, but he's got the money and it's something that no one else has offered us. I know he'll be a great asset at developing the business, generating sales, and even resourcing manufacturing. But during the product development phase I don't see him as a fit. What are your experiences with taking a non-strategic investment vs turning down the only investment offer on the table?