How tiring is riding the bullhorns? I was wondering if anyone here who is riding with bullhorn handlebars could share how tiring it is to ride, say, 50 km? I am thinking of setting up them to my road bike, mainly because, you know, it looks cool, but it almost feels like riding on drops which I find uncomfortable after a while. Bullhorn handlebars also provide 2 positions, so, does that make it more manageable? I am interested in rides which are about 30 - 70 km long. Thanks!
I use bullhorns on my fixed gear commuter bike, and sometimes get some hand fatigue/numbness because of the position.  As with everything, everyone will have different experiences because physiology.  But it's been my experience the most comfortable position is in the curve forward.  The forward position is close in comfort to riding on the hoods on normal drop bars.  If comfort is your aim, you will probably get more mileage(get it?) out of better tape or a nice set of gloves.