I have strong front teeth that are a little uneven so this thickness works great for all of my alto, tenor, bari, clar and bass clar pieces. I do not notice any excessive dampening of vibrations due to the extra thickness. I recorded myself on metal and HR pieces with no patch and then with these hearing no difference on the recording.
I use gold plated metal mouthpieces on my saxophones. These require replacing the cushion on a regular basis to prevent teeth marks. I like the thickness of these and they are of a size that is comfortable on alto, tenor, and baritone saxophones. Other cushions I have used were so thin that they didn't last or provide much cushion. I like that they provide this cushion while being almost invisible.