I don't think you need a tolerance break to appreciate vaping through water or anything.
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I wish I had more logic and science to back me up but all I have is really strong feelings about vapor-bonging haha
I've been someone who has used water since my early days of vaping and the amount that it smooths things is worth any flavour loss. I almost can't stand regular vaping anymore simply due to the harshness at high temps (Herbie @ 430F). This fueled my purchase of a water piece when prices were good and I could get something close to my DIY rig in function.
Logic about Vapour bonging? I love vapour bonging because it has all the great things about a bong without combustion. Big hits, smooth vapour, sound/dynamics during the session, and it can get you high pretty damned quick. I see it as something to increase the quality of your sessions and augment the experience of your current vapes. Also glass has so much tradition with cannabis that it seems silly to leave it behind just because we're consuming vapour.