Sure is but why not create a new profile and set it how you like?
That way you still have your Quiet Profile if you ever need it.
Profiles => (wheel)New => [Give the new profile a name]
Scroll to each application
eg. Phone => (wheel)Edit =>
change the tone-vibrate settings for both Out of Holster and In Holster
select => (wheel)Change Option => [chosen setting] => (wheel)Save
But if you really want to edit Quiet;
Profiles => Quiet => (wheel)Edit => make the changes you want as above