I've never heard of it, there are no reviews on Amazon and, it's black, I would rather use white tape and caulk on my roof.
My opinion is, pay more and get Eternabond. It's a proven product that works. I've used it for several years and would not hesitate to recommend it to anyone.
Yes, it does cost more than the tape you are looking at, and maybe yours does the job. But, I know the Eternabond will be sticking and stopping leaks many years after I apply it to my RV roof.
If you decide to purchase the tape, please give us an update on ease of installation and quality of the product.