Testing a port built with poudriere

Thanks to help from Mark Millard poudriere successfully finiished
a build of x11-wm/lxqt on a Pi4. The build command used was 
poudriere testport -j main x11-wm/lxqt

A collection of packages turned up in:
/usr/local/poudriere/data/packages/main-default/.latest/All

The pkg man page seems to suggest that: 
pkg -r /usr/local/poudriere/data/packages/main-default/.latest/All install
would install all of the new packages. Am I reading correctly? 

Is it possible to try out the lxqt package without altering the
existing ports installed using make in the ports tree?

Thanks for reading, and especially to Mark!

bob prohaska