I went about 8 months without any poo but now my hair seems to require it ... not sure what changed ... but my hair is pretty greasy these days if I don't use any shampoo. I think you should do the gentlest cleaning method that still gets your hair clean. co-washing is definitely gentler than low poo but just not enough for me lately.
I saturate all of my hair with conditioner and then add low poo to my scalp area. when I do that then my hair is a lot less likely to get the "finger in electrical socket" look typical of shampoo :P so yeah ... I think your suave naturals idea is good ... it sounds pretty similar to what I'm doing actually