I am a little jealous. If I had not bought my shooting plane solution a few years back I would likely want one of these.
One negative, however, is the milling of the gap where the blade goes. It is very rough, and for me in the tropics that means harder to wax and easier to rust.
There are a few ways you might give a thought to on this:
1) Work the area your self with abrasive sheets and stones. (lots of work)
2) Brush an oil wax mixture into the area.
3) Paint the bare metal to protect it.
I live south of North America's tropical rain forest and know humidity well.
Just curious, where do you call home?
jtk
"A pessimist sees the difficulty in every opportunity; an optimist sees the opportunity in every difficulty."
- Sir Winston Churchill (1874-1965)