Yes. Using a combined carbohydrate and electrolyte drink does not mean it has to be your only source of calories. Some runners rely heavily on drink-based fuel, while others combine it with gels, chews or normal food according to appetite and preference.
One practical approach is to carry Tailwind in one bottle or flask and plain water in another. This provides some separation between fuel and total fluid intake, while also giving you a choice of flavour during a long race.
