Hold, yes. Some people complain too much hold. I don't find that to be true AT ALL, but them my porous hair makes it so a lot of harder hold gels aren't that "hard" on my hair.
I would say its fairly light, as long as its used on very wet hair and in smaller amounts. It's very concentrated.
Clumping - definitely!
Crunch? Not for me, but others have said yes. (Again, if you don't use it on very wet hair you'd have more issues there, I'd think.)
Whether you can use it alone or not is going to depend on how your hair reacts to it. In the higher dews I've had less luck with it. I think if I tried it over less LI (and a lighter LI), it would be better.
2c/3a/3b, Fine/med, Dense, high porous, & normal elas.
Lo-poo - Renpure Keratin, SMR, Giovanni SaS
clarifying - mix Johnson's H2T with low poo
Co-wash - Suave Nats. clar. or coco.
RO - GVPCB, Ion Eff. Care, TN.
LI - SMR, Cure Care, or RO
Seal - MO or Jojoba
DT - + honey, ACV, & EVOO to SM masque & GVPCB
PT - Gelatin!, CNPF
Styling - FSG, AIF, BRHG, LALS/PS, GF curl spray gel, SM Souffle/Smoothie, LOOB
Oils - MO!, EVOO, jojoba, GSO, SM Elixer, EVCO, VO5 Hairdressing