I've just fitted a full set of AS3 hoses, using their SS full band clamps and have had no end of issues with leaks.
All the spigots were clean and in really good condition so I do not think that was the issue.
I'd tighten it all up, pressure test it and it was all Ok, go for a ride and on my return there would be a leak from a joint.
Tighten the offending clamp and all OK.
Go for another ride and there would be another leak from somewhere else.
Persevered with this for a week, chasing leaks all around the place until it got to the point where the leak was under the throttle bodies.
At that point I removed the AS3 hoes and went back to my plain old rubber ones.
Not a leak since.
So as far as I am concerned, silicone hoses are off the agenda.
Total failure.