Nah, it folds at about teh same pcae as windows - since it has both the linux and windows folding clients available to use. Using the linux client and folding tinker work units is a bit slower than using the windows client on tinker units but other than that the differences are nominal.
But it is virtually instantaneous folding- ie requires no setup. It is great to substitue in if your hard drive or OS ever dies, or to biuild cheap boxes with no hard drive.