Mini will work great for all kinds of camp. But do take note that platypus threads are not standard and will leak when used with the Sawyer. However, evernew bottles will work fine.
You can set up a gravity feed pretty easily, just get a large bottle/bladder whatever, that will fit the Sawyer threads and just buy some food safe tubing for the clean end. You can buy one of those screw on adapter sets that comes with both male and female ends as well if you want to plug your clean tube into an adapter and screw it onto a clean/filtered water bottle/bladder (so you don't have to stand there and watch out for overflow).
I used some adapter bits to be able to use my regular Sawyer Squeeze in line with my hydration bladder if I want to, and when it's time to get more water, I just open up my hydration bladder, fill it up with water, and either gravity feed to clean bottles if in camp or drink straight from it. With the mini, since you have nipples at both ends, all you need is tubing or cut the existing tubing of your hydration bladder. However, with the adapters, you have the option of leaving off the filter and just screwing the tubing back together to use as a regular hydration bladder.
Just buy the adapter set from rei or somewhere and the proper size tubing and play around with set ups and find one that works for you or make it modular.
Sorry if there are a bunch of autocorrect errors. Typing this all on my phone with Google's gesture type.