It is difficult to pin down the manufacturers (the people that actually make the cells) as to a number of questions regarding Lithium technology as we apply it in the modeling community. I have found that answers via the distributors vary nearly as much as those from the actual users. It appears we have to build our own technical data base on lithium technology according to our unique application requirements.
As for Garry, I've seen him fly and he doesn't baby the packs. Of course realize that "long term storage" for us here in the sunshine state is seldome longer than a month as opposed to "northern storage" that can be closer to 9 months between flying sessions.
Like Garry, I like to charge mine after each flying session so they will be ready for the next one, be it tomorrow or next month.