If you print onto light coloured fabric I suggest that you add the Clear Base to the normal colours, to obtain the elasticity required.
If you print onto dark coloured fabric, it is better to print a base using Elastic White. Then you can print onto the base using the normal colours.
It is true that the elastic colours have less covering power than the normal ones.
The question about a drier is not important, because you have the same problem with plastisol inks.
Also in plastisol inks there is an elastic base. Usually people add the coloured pigments to the elastic base with good results.

This is Franco Ratto,