I have one of these bed covers. I bought it before the subscription crap started and I am very satisfied with the product. The dual-zone cooling/heating is super good and has been a big improvement to my quality of life/sleep. Especially considering that my wife has different ideas than me about temperature and what constitutes hot/cold. Yes, it would be nice if I had local control but I am willing to ignore that as long as I don't have to pay more.
But I wouldn't recommend anyone buy it now because of the subscription.
It is good to know that there is an option to continue using it if the company decided to no longer grandfather in people who bought before the subscription crap started.