Solaris for PDMS?

Been thinking of rec-coating my tanks and saw that Smooth-On sells a product called Solaris.

The big difference between that and what others are using is the silicone has a much lower durometer. of 15 instead of 50. I was thinking that it might be better since it would help cushion the prints and reduce the chance of cracking the tank.

Has anyone tried it? Do you need the pre-treater or can you just pour it without?