You might want to give this one a listen… Are Gels Really That Bad? w/ Dr. Mark Hearris - The Science of Getting Faster Podcast Ep. 9 - #2 by webdev511
TLDR evidence suggests that one should start with solids, then move to gels and finally carb drinks. Skipping right to drinks leaves a lot on the table in terms of pallet fatigue.
Personally I was already sort of doing this, but I’m also flexible. If I get an eat prompt and not able to eat solid, I adjust and take in what I can. Gel from a flask or a hit from a bottle loaded with carbs. Staying fueled is job one. how we get there is a matter of practice.