summer is coming...4 bottles can be not enough on long days,but since this bike will spend most of its time on the roads theres usually going to be a convenience store somewhere...the idea for this bike was to be able to do road based "picnic trips" like going across the pass and eating lunch over there and riding home...need space for food and a rain jacket or poncho,tool kit,spare inner tube,flat repair kit,first aid kit....you get the idea...your worried about weight ....... & you add all that extra shit on there .....
one full bottle of water is probably more weight that you shaved off by using different componants & going tubelss lol
naw,im no weight weinie,but i also dont want to pedal more weight than need be...its good to get weight off the wheels though,rotational weight is where you really expend a bunch of energy...and tubeless is just plusher a ride and more reliable in the desert...