Can I use 2 calendar apps for 2 different gmails on GS5?

[r9thomas]

use 2 calendar apps for 2 different gmails on gs5

my calendar and my wife's calendar are pretty cluttered but i'd like to see both, so hers is shared with me. however i don't want both on the same screen because its too cluttered. I know i can uncheck her calendar, but that gets cumbersome and slow.
I would like to have two calendar icons where I can click on on one for mine, one for hers without combining.

any ideas?

thanks,
Rick