So, I'm thinking you aren't able to use glycerin since you aren't sealing? I also like Suave Clarifying Conditioner which has no glycerin or protein. It feels lighter to me and has less slip than TN.
I understand being afraid of oil. I was positive that it would make my hair greasy too but I tried it and it didn't. I don't put it anywhere near my scalp and I literally only smooth a few drops down my strands to seal moisture in/out. It felt strange putting it in my wet hair at first but I don't notice it at all when dry.
Good luck with your experiments!
CG since 3/1/13
3B; Low porosity, Coarse, & Extremely Protein Sensitive
Very high density, waist length
Co wash: Suave Clarifying or Sun Ripened Strawberry
RO: Sun Ripened Strawberry, TN, or TN w/ veg glycerin
Sealer: apricot oil
Styler: 4 Naturals Spring Back Custard, Pantene Curl Defining Mousse, or BB "Mudd"
Using a hard water filter, microfiber towel, & silk head scarves & pillowcases
Avoiding: protein, coconut, & parabens