What I don't get is why you say you can do this while your gpu folds?
I think yous don't realize is the the CPU client is still the important client for folding, and without the cpu, uni-cores and smps, the gpus are useless, Which are still only beta.
Also, what you don't seem to understand is the science might be different, but the causes are the same... Yes, there are a few other sciences done, but the core stuff is very simular.
From your description, it seems the only real difference is how points are awarded, ie lots of points for cpu work... Which is a sad reason for doing any of these projects.
"crunch" or "fold" or scan for ET, its your power so do what you want... just make sure youre not sprouting mis-info on them.
Once again, the forum seems to be a population which isn't able to do theses activities, so don't expect a big population.