Many people have contributed so I won't repeat what they said as that is what we have also found.
I would just add that there are other benefits in a straw system than just the aerodynamics side. One reason I have heard more than any other reason, is to remind them to drink as you mentioned. Whether it is a reminder in avoiding dehydration/ultimately bonking on the run course, or tactically - before overtaking, take a quick sip and then power through on the overtake vs pulling up on the straw and potentially missing your opportunity for that overtake.
Candice Turner
CEO
XLAB - Aerodynamic Triathlon Accessories
Dawn to Dusk - Off-road Specific Storage Accessories
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