Have been using the Harmony One since they first came out. Apart from a swollen battery in the early years been loving this remote. Agree with what has already been said about the awful software though.
For those wanting to add channel icons to your Favourites here is the site to go to.
IconHarmony the source for your favourite icons (previously called: Square Eyes Icon Harmony)
Just select your Harmony Remote, type in New Zealand in the search box then tick each desired icon and then click "Zip Icon" then click "Download" and there you have them. Within the New Zealand selection are all the FTA channel icons and some Sky. If you want others that are not there click on the alphabet letter in the alphabet bar and you will more than likely find what you are looking for.
The site even has YouTube videos on how to add Icons to your Favourites for the old desktop software 7.7 and the new MyHarmony.com.
If you do not find the icon you are looking for then find it via Google and send it to him via the upload link and he will convert it for all the Harmony remotes.
You can of course create your own Favourite Icons. Learn about it here: How to customize your Activity names and icons
If you require the Harmony desktop, MyHarmony, iOS or Android software you will find all here: Harmony Software
EDIT: just noticed that most of the FTA icons are out of date on IconHarmony so have popped him an email with the link to the Freeview channel page.