I could care less what the fashion police at BF think or whatever image someone has about those who ride with camelbacks. That's their problem, not mine.
I don't ride with my Camelback (used while riding MTBs) because it's just too hot under the camelback. SOooo, I tried Camelback's waist pak. That thing leaks, has mounting problems, and keeping the mouthpiece mounted next to a helmet requires constant adjustment.
I finally gave up on all Camelbacks and just learned how to reach down and grab a bottle while maintaining speed.
I haven't tried the latest Camelback undershirt design. Somehow riding with an undershirt full of water under a jersey with outside temps in the 90s just feels like another Camelback disaster. Geez, when they copied the Polar bottle, they couldn't even get that right making their version too small.