Our lab loves to wear her pack, but I think it's mostly due to her understanding we're going on a long hike in the woods. Our smaller dog (terrier mix) wouldn't last with a pack and has a hip problem after walking/running too long - so she'd end up being carried after about 3 miles or so. She's an alarm system, as far as we're concerned. Good for alerting and possibly small game hunting.
When we were in Germany, some idiot American tourist (note: My wife and I are American - we were military overseas) assumed that we didn't understand them. They told all their friends that we treated our dog like a mule and that we were dip****s for doing that. I didn't hear it, but a friend did and she just went off on these poor people. They just assumed everyone they were around was German or something and didn't understand. Friends use to laugh at us for OPSEC and attempting to blend in - we even tricked the Germans once in awhile.
Anyway - back on track - a harness/MOLLE system would work, but you've really got to think about the dog. The wrong harness can end up rubbing the dog raw. We ended up accidently doing this to our lab. She didn't complain all day, but we failed to check her. After that mistake, we check her at every break. Anything not flush or anything not secured can cause more damage than you think, even if it's just a looped attachment point (which is what caused our lab's problem). It's just like a human and an ill fitting backpack...
Also, those canvas collapsable bowls are short term stuff only. Both of ours now leak water and we've only used them a few times. Not that bad when you're out on a hike, but every drop counts in an emergency. You're better off getting those plastic water bottle bowls that attach to a water bottle - easy to pour & store.