Yes, Bernard, I use the same fingering for a G. Easy transition to a C, or especially a sequence of G to G7 to C.

I do sometimes use the other fingering if my next chord is going to be a Bm, and then my 1st (index) finger is right where it needs to be for the bar.

Numbering the strings and the left-hand fingers is standard notation for classical guitar music.

Don Firth