Yes on both counts. The idea behind using the Download Cacher is to get the browser downloaded and cached on the root server before Google replaces it, so we have a version that matches whatever Fixlet we’re using. It’s an alternative to “hurry up & send a action so the download gets cached”.
You could run the Download Cacher as a scheduled task. Run it a few times a day if necessary.
An alternative to that is a Fixlet I posted to BigFix.me that just deploys “whatever version of Chrome is available now” (at the time you click Take Action). It does not verify the hashes though so you never acknowledge what version of Chrome you end up with until you take the action.