There is a thread here
on The Hull Truth where a guy installed one. Functionality is limited, but in all honesty 90% of users won't miss any of the omitted features. It looks pretty good for the market that it addresses, and appears to work as advertized and without fuss. It's sad that this last comment is even noteworthy, but given some of the junk that I've encountered and read about, it does make the product stand out.