Yes, yes you can have bantu knots/corkscrews/chinee bumps/
See for yourself.
This took next to no time at all (I did it while retightening) and I used the water based Almocado Loc Dew to help set it but the same style can be achieved with just water or your favourite setting lotion (or nothing at all!) I used a product because I wanted the resulting curls to last for at least a week - and they did.
Fan Page: www.facebook.com/almondandavocado
Sisterlist UK Group: http://www.facebook.com/groups/sisterlistuk/