I have been meaning to buy trimmer covers for a long time, but have never gotten around to it. My main goal is to keep them from getting rain-soaked. I doubt I would ever use them between jobs, so I do not think the heat-liner model would be worth the added expense to me. The cotton-lined ones though, maybe. Here is my question. Like probably 90% of the people out there, occasionally a trimmer will leak fuel, for whatever reason. Would the cotton-lined or non-lined models be adversely affected by a little spill? I am not talking constant exposure, but the occasional leak. Thanks.