Tiling Shower walls around Tub

hello,

I have just finished installing tile around the walls of my shower/tub. i am concerned because i used Omin-Grip , instead of using thinset in a bag. i would like another opinion as to whether or not i should consider tearing the tile down and re-istalling using thinset. I didnt realize until after that the omni-grip is only recommended for up to 16×16 tile; i used 20×20 porcelain. it seems to have held up fine, and is not sagging.

These are the facts:
20” x 20” porcelain tile
Omni-grip maximum strength premixed was used
1/2” wonderboard, cement backer was used

the grout has not been done yet.

i’d just like to know if anyone think i should rip the tile down and re-tile it using a thinset . What woudl be the consequence of leaving it like it is?

any comments are appreciated.

thanks
Colby