I think these backpacks are great. Realistically, as an amateur (ahem..family guy), I need something that is mobile, quick, easy access BUT without being cumberssome.
Kata DR-467 (they also seem ta make a 465 and 466..assume small, med.)
http://www.kata-bags.com/product.asp?Version=Photo&p_Id=400
http://www.youtube.com/watch?v=jlHpDh_VU9M
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Tenba Gen3 (they make a small and large..no medium?)
http://www.youtube.com/watch?v=cOhxuB-YyqU
They both look very similar and ability. Anyone try these personally?