I know what you mean. I feel the same way and that's why i am still playing the JK now.
It's just since were a smaller guild whether i am in the raid vs others isn't really the problem, it's the diversity. I mean, when i first played in beta Shadow was actually what i wanted to do, so i leveled one as well as a JK to see how they played. At launch my Guild Leader said he thought i should roll JK, cause i couldn't decide. So it's not that i would really mind switching at all, seeing as my guild has no Shadows at all.