avatar78 wrote:
As far as if it's worth it, if you want to set up a road bike closer to a tri bike setup, I don't think there's a comparable product available. I'm not aware of anything that's comparable in terms of speed of swapping between one setup and another (assuming you have the brackets installed already). If you're going to want to install and remove the bars frequently, and are happy with an average position, then they seem like a good proposition.
However - and it's a big point - like many aero bars clipped to a road bike, they are a most likely going to be a compromise on position. They're just not low enough for the majority of road bikes: minimum pad height is 75mm, and if your bar isn't low enough then it's extra faff to move or swap the stem.
For my hacked road bike I have a full replacement cockpit: stem (very slammed), base bar, low clip-ons, brake levers and shifters. 3 bolts and 4 cables (external, yay) and it's swapped - about 30 minutes, but worth it in my opinion. Position is about as good as it can be (a forward seatpost and a good saddle are the other critical components, don't neglect that end of the bike).