What works best for me is to treat any good leather boot with melted in bees wax then Obenaufs over this to soak into the seams. I do this only on the lower half or to where a gaiter will overlap the treated leather. Much easier to keep gaiters in good shape and not worry too much about the boot liner. They all eventually leak.

If I were in muskeg or wading creeks I would treat the entire boot. But since I am more likely to see hot weather I don't want to sacrifice any breathability.

Some people carry goretex socks for creek wading or if the boots start leaking during the middle of a trip. These feel like plastic bags on your feet to me, so comes down to individual comfort level on what works.

"When you disarm the people, you commence to offend them and show that you distrust them either through cowardice or lack of confidence, and both of these opinions generate hatred." Niccolo Machiavelli