Very easy to set up and it can be ordered online.
The thing I do not like about it as opposed to using flexwatt is it runs very hot in a more concentrated area. A bit more tweaking to get the temps right.
One other thing to consider is if you run this over 90 degrees for extended periods of time, it will die on you.
That could cause a problem with a rack system if you use back heat since to get a nice warm spot in the tub, you need to run it higher than 90 degrees.
Personally, with the reliability and ease of using heat tape, I think you would be better off going with that versus the cable.