I had a couple of modern carbon fiber bikes with 105 components, a giant with brifters, and a trek with down tube shifters, both bikes spent 90% of the time I owned them in the rafters. (preferred riding the old steel bikes)
Thought about taking the components off and putting them on the bikes I rode more, but didn't see tham as being enough of an improvement over the blaze and 600 components I already had to make it worth changing the look and feel of my old stuff.

Ken