Yes you can use some cones depending on how fast they buildup for you and just shampoo now and then when you need it.
I think the only one that doesn't work that way for me is that cyclo-xane one. But I see that some use it fine without problem so it might just be my hair that hangs onto that one? It's in a lot of hairsprays.
2c/3a?
Low porosity, medium texture.
http://public.fotki.com/Medusahair/

If it smells good put it in your hair, if it tastes good spit it out!