Canon 50D with Nikkor 105/2.5?

Who have experience with them?
In particular, with 105mm f2.5 is easy manual focusing?

I like that lens and don't have the money for the Canon 100 f2

For the cost of a good F to EOS adapter like http://www.bhphotovideo.com/...apter.html for $270 AND being restricted to using "stop down mode" on the lens, I would sell the Nikkor 105 for $100 and use that money towards an EF 100mm f/2 or the 100mm f/2.8 macro.

Remember… No one ever said photography was cheap or easy.