Something to think about..
Using a military pack for a temporary bug out situation or even a get home bag definitely has its benefits. One of the things that concerns me the most about them is that they attract attention..Sometimes not in a good way either.
I used to carry one as a day pack on trails and I would get all kinds of comments about "oh you look prepared.." "I know who to find if I need something."
Sounds silly but this can put you in a tricky situation if not careful.
I prefer day packs, They allow you to be more gray man IMO. For long term SHTF I will take my military bag, but for my 72hr BoB I just use a 35l day pack.
not one question to me on my keltyfalcon while humpingit along the FT.
i see plenty of alice packs...and other "military" gear on the trails though.
camo is common even in school bags.
how you carry yourself is what will raise flags shtf..a pack is a pack
"whats homey got in there.." is the key thought process not " oh look he's got a multicam tactical tailor three day ruck he must be ready for shtf..lets attack him.."