I don't think I get weighed down easily at all, even when my hair is a little less porous than now, and I have thin hair on top of it being fine and porous! Stylists never use enough product in my hair, and when I first started CG, I was afraid to use as much gel and creams and whatnot as I do now.

The only time I seem to get weighed down is using extremely extremely heavy products in excess. I can use heavy conditioners and gels, no problem. So I guess it kind of depends on what type of product it is? A butter or oil, and I can only take those things in small amounts if I don't want to get weighed down.
Wurly, fine, thin, moderately to heavily porous. Mod CG.