I only have two frames that need various kinds of"clip"; what I tend to do (as I'm fussy) is stick the tape to the clip (preferably a clear tape) that way it will permanently protect the paint. The clips will also attract dust over time (and although you may not notice), it will rub the paint, so remove, clean and replace occasionally.
Sounds a little OCD.
If you're having the frame refinished you can add braze ons. Many were available, for example: top tube cable braze ones from the early 50s, bottle braze-ons from at least the mid 1960s...
Jon.