I've been high-fat, low-carb for a couple years and fully primal for about 7 months now. In those 7 months I haven't been lifting weights at all, just staying active through climbing and other activities, and have dropped from 173lbs to around 162. I had to eat a lot and lift a couple times a week to stay in the 170's and it just wasn't worth the effort for me to keep 10 extra pounds of vanity muscle. Climbing seems to have a way of restructuring you for better strength:weight. I haven't had an official body composition test done, but from the range my Tanita scale reports, I'd guess in the neighborhood of 5%.
I've been restructuring my diet a bit to add in more carbs. Very lean composition + intense activities doesn't seem to give great endurance. Adding more fruits, sweet and other potatoes, beets, etc seem to be helping in that respect.
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