Hi,
Do you mean impact driver as in the discontinued TI 15 model? Or are we talking about a percussion drill like the PDC?
If it's the latter and your snappy bits are rated for use in a percussion drill, you could simply put them in the jacobs chuck.
I would not recommend to have a regular 1/4" hex bit holder (centrotec or not) serve as an adapter for the use of hex shaft drill bits with a percussion drill.
(Same goes for impact drivers, there are bit holders and bits out there rated for impact use - those should be preferred)
Kind regards,
Oliver