I'd contact the manufacturer of the switch and see if they make the same switch in a commercial grade.
I'm familiar with Leviton products, and they make both different grades and styles of light switches. For the most part, their residential grade light switches are rated at only 15 amps. Their commercial grade switches are available in ratings of 15 and 20 amp, and their industrial grade switches are available in ratings of 15, 20 and 30 amps.
AC Switches > All Leviton Products from Leviton Electrical and Electronic Products
So, if you like that push button style of switch, see if that same style is available in a commercial grade, in which case you should be able to get it in both 15 and 20 amp ratings.