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Yes I have one.
Why do you need a bleed valve? I have found if you turn the top once on a bag, then use a knee to compress no valve is needed really.As atk said. I tend to double bag, or even tripple anything important. My sleeping kit goes into a sea2 summit ultra sil bag, and then inside of dynemma or thicker tri laminate bag. Sleeping/insulation isn't something to try save gramms or a little space when it's so vital.
Been looking for a dry bag with a way to bleed air out of it for compression, anyone got any experience with the Sea to Summit eVent Compression Dry Sack? I'd be using it with a bar harness to put my sleeping gear inside.