Wine isn't really ideal for playing the doses in linux although running i-doser under linux does have other uses.
As I said before, there's no reason why I-Doser shouldn't bring out a version for GNU/Linux - It just depends if its worth the effort that could be spent on improving the windows one or testing doses or whatever. BUT if they did make one I would appreciate it and use it.
I-Doser should definitely be ported to Linux. I use Windows (it's my mom's computer and she won't let me put Linux on it), although I have Linux on my old laptop. Anyway, yeah, it'd be great for those who use Linux.