It's your gun, do as you wish. There's always someone that's not going to like the results or agree with the project to begin with.
One thing to keep in mind. A bbl and cylinder swap on this will have as many potential problems to work through as with any other bbl & cyl switch no matter the frame size or caliber.
Bbl not clocking the front sight up to 12, Cylinder gap being too large/too small,, Bbl shoulder needing to be cut back and the bbl turned in one extra turn,, Forcing cone needing to be recut.
Cylinder end float correction as it's switched to the 'new' yoke.
Timing problems as you are working with a new ratchet on the nickel cyl..
Of course none of these things may come to be and I hope it goes smoothly should you go ahead with the work.
But be ready for them.
Doing the work yourself it's just your own labor & time.
Having to pay someone to do it can really add up and spoil a nice project.
Modifying any of the blued parts so the nickel parts fit will negate the orig bbl and cylinder going back in place and fitting correctly if you decide you don't care for the new pinto look.
I personally like the contrast of different metal finishes on the same gun. I use it quite often on projects.
Blued bbl, French Gray frame and trigger guard. Polished in the white trigger and bolt,,Small pins and screws Nitre blued,,things like that.
Not a 'Pinto' look but still the use of contrasting finishes.