I've been using the Crown CM311A for over 15 years. I use a Tupperware type of container without padding. I also keep my mic cable and keyboard A/C adapter in the container, and that probably provides some cushioning for the mic.
I usually go about 4 years between mic repairs, and I do over 400 shows per year. I don't think I would have better results with a padded mic container. For my needs, this would create more bulk and add time to my setup and take down. Just one minute times 400 shows = 6 hours and 40 minutes of time per year.
I can understand how someone who is doing 400 gigs a year would be looking to cut every minute of set up-break down time as possible, so I guess if using a Tupperware container works helps with that, then fine ...
What I had to smile about was the calculation of the 6 hours and 40 minutes of time "saved" per year ... Does one save "Time in a Bottle" (to use the title of one of the late Jim Croce's songs) ? ... how are those 6 hours and 40 minutes spent? ... does one play a couple more gigs in that time?
Just wonderin' ...
DISCLAIMER - the above was written with tongue firmly planted in cheek ...
BTW ... I have a nephew who once commented about his dad who was always making a list of stores to go to when he went out so he would "save a trip" ... my nephew wondered where his father put all those "saved trips" ... he was concerned that one day he would open a closet and all those "saved trips" would come falling out on top of him ...