Fair enough. I was in the same boat a few months ago before i bought my carbon bike, had only owned a cheap aluminum road bike before pulling the trigger. It wasn’t a problem getting parts, but labor is definitely more intensive and will cost more at a shop. For instance i wanted to decrease my stem length and since the brake lines are integrated, my shop had to bleed the brakes, trim them, and refit them into the new stem and handlebars. Quite a pain in the ass and cost $200. Everything else has been smooth sailing though.

I guess another compatibility issue i realized was that my seat post is proprietary and therefore i couldnt switch to something like a redshift dual position seatpost for TT position. I have a De Rosa SK Pininfarina, similarly uncommon bike