KJay,
All the talc is, is more or less baby powder, scented chalk.
One thing I found with using gloves during the summer, is to get really thin cotton gloves, having been a wicket-keeper in cricket before, I tried out my old "inners" (gloves worn under the actual keeping gloves) and have a good stock of them here, cotton, being a natural fibre, enables your hands to breathe, as opposed to nylon or stuff like that.
The reason behind you not having good dexterity when wearing them could be down to the gloves being slightly too large, gloves are like shoes, as in, they will seriously damage your feet if you try and wear a pair that are not sized to your feet.
