Note: All APIs steem-ruby, steem-mechanize and radiator provide a file called steem.rb.
Note, as of radiator-0.4.7
(or just before, probably):

So there was a time when you could not require
both radiator and steem-ruby in the same runtime. But now, they should co-exist fine.
Well, radiator still provides a
steem.rb
so I'm sceptical.But I'll give it a try — maybe with the right order it works.