Hi Eceils,
Yes it's worth it.
I bought one for my Amerique.
After trying to do it with out and could not keep the smoker cool enough.
So far I have done lots of cheese.
Here is a link to one of my smoked cheese.
http://forum.cookshack.com/eve/forums/a/tpc/f/7091028883/m/9371093904
Thank you,
Brian E.