Yes, silicone and sulfate free is all you really need to be CG. It's just to be successful at CG you still have to be wary of your conditioner/cleanser balance. I think my mother uses the same sulfate free shampoo I use to clarify on a regular basis. That's why her hair can get very dry sometimes. I could use Shea Moisture's low poos every time I wash I suspect and not get dried out too terribly since they're sulfate free but also super gentle. But my scalp and hair seem to like my routine of cowash, cowash, lowpoo best. I still haven't gotten back to swimming because I'm unsure of how my hair will react but I read oiling your hair slightly with olive oil before you hop in the pool protects it from chlorine. Gonna try that this summer.
3A - C, HP, ME, HD. (Coarse, High Porosity, Medium Elasticity, High Density.)

CG since Nov. 2012

Poos: SM Moisture Retention + Yucca Baobab, TJ's Tea Tree Tingle
Condish: TJ 'sTea Tree Tingle*, SM Moisture Retention* + Curl & Shine + Yucca Baobab, Yes to Blueberries
Stylers: KCKT*, SM Curl Enhancing Smoothie* + Curl & Style Milk*, KCCC*, FSG*, CJ Pattern Pusha, Curl Keeper
Sealers: Jojoba* or Grapeseed* oil

* = HG