I agree with confirming after setup. I like the motto of trust but verify. I trust my rotary table will be within a few thousands by using my adapter but then by throwing my test indicator on the quill and running it around the center hole I merely verified its accuracy or had to move it ever so slightly. It is still much faster than setting up by test indicator alone in my opinion.
I have heard friends tell me that they hardly use their rotary table or hate to remove their vise from the mill table because of the time it takes to set them back up and dial back in. I really don't understand that because after very little practice you can have a vise or rotary table dialed in rather quick. I have just found the little trick I use helps me get there a bit faster.
Time? This is a hobby forum, it is what we do,to occupy our time.
Changing machine tool for the job is the practice to get better to expand my abilities.
When the effort becomes too much for me. it is not a hobby and time for me to get out.
I try too to make use of all the tooling,not avoid it.