This question was asked...by the 70.3 World Champion who rode a road bike to win that race.
The S5 is designed around a 73 degree seat tube angle. Again, Damon may chime in here when he is not traveling. Or some of the dealers may chime in as well. There is a 2 position post. The front position is designed to be ridden as a 73 degree bike. The rear position is set at 40mm of offset. So, definitely this is a road bike...not really a crossover bike between road and tri.
If you are good with shortie clip ons and a moderately forward road position...then yes, this bike will do it all. If you want a more forward road position or more rearward tri position, then you might have to see if there is anything else in the line that might work.
Aerodynamic-wise, the question was asked about how it compares to the P4. There was not a definitive answer given since a rider on the P4 set up properly is 'generally' going to be more aero than a rider set up on a road bike...even with shortie bars. But, when comparing this aero road bike to other aero or other road bikes, then I suspect you will be faster on it given the same position.
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