I am playing in small groups coached by local Phil players. They (and I) have done their research (studies by UC (Colorado ) and CSU). Last week the pros asked if I had a bell cover. I responded that I had left my Crown Royal bag in my kit bag. Then I remembered that I was wearing a Buff neck sleeve. I took it off and wrapped it around the bell. I could not tell any difference in tone or playability. Problem solved.
Another note -- the phrase "Science is Science" has become trite. Science is a process. The "Conclusions"
can and will vary considerably.