I did a search in rec.woodworking on lyptus and found many hits. After
a quick scan, I hadn't found any comments on finishing it......
I also did a google search with keywords "lyptus wood finish" and found
several. For example, look at the bottom of this web page:
Another interesting page, which mentions lyptus but only has one
sentence on finishes, is: http://www.plesums.com/wood/choosingwood.html