Ignore the snobbery, camelbacks, like baggy shorts, just don’t work well on a road bike.
Roadies don’t use a camelback party because of “the rules” but mostly because there is no need at all, you can get all you need in a couple of bottles, you jersey pockets and a saddle bag if needed. It’s more comfortably, you’ll get less of a sweaty back and there is something very pleasant about having nothing there as well.
Lycra is the same, I wear it because it works. Yes, I may not look overly pleasant to other people but I’m a grown man on a push bike, I look like a tit anyway, I may as well be a comfortable tit.