Honestly and realistically, you shouldn't have one pack for a BOB, or just one BOB for that matter.
Bugging out will be different depending on your situation. Small "bug outs" may only require a GHB. Leaving home may be a GOOD or INCH bag. It all depends on what you are expecting. Size and equipment and durability will vary based on these requirements.
As far as the concealed carry goes, I understand what you are going for I think, but let me talk from a different angle for a moment: if you have a ccw, the reason behind it is to have a weapon of the same or better technology level as the highest level you expect reasonably face, in this case a gun. This is only really usable if it is on you where you can ergonomically deploy it when needed. I haven't used the packs you mention or really analyzed them for this purpose, but that being said, I wouldn't want my ccw to be behind me in a bag pretty much out of easy reliable and sure reach when I needed to deploy it. That being said, having a bag with a special pocket for it could work against you if you kept one in it and kept the bag in your car and the car was stolen, or the bag stolen out of it. I saw this from experience. I loaned a revolver to a friend so he could work a armed security job. (Dumb!) He left the gun under the seat in his Jeep. (Dumb, high priority theft target) Jeep stolen. Gun gone. Who knows what it has been used for since? I don't. The cops don't. Just the guy who stole it.
If you are licensed to carry concealed or open, why put it in the bag? I'm not trying to pick at you, maybe I'm missing someting, but I don't get it. I mean if you are often at places you cannot carry even licensed, I would see about some low profile fast access strong box for the inreior of your vehicle.
But to continue, different sizes and types of bags for this is a good idea that way you can scale up or down depending on your needs from one one of hopefully many sets of bug out gear.
Feels funny to say this because at the moment, I really only have one BOB and its name is ALICE so its pretty much what it is, a BUB: Big Ugly Bag. A multiple redundant system is my goal though. I'm pretty new at this, but those are my thoughts and questions about it.