It's pretty I suppose, but in my opinion soft mounts are a bandage for poor hard mounts. If the engine only has itself to vibrate, it doesn't have to overcome as much as if it had the bike and rider to vibrate as well. it's a lot easier to shake around 30 lbs than it is to shake 270 lbs.
soft mounts may be easier on your butt, but good hard mounts will always be better than any soft mount.