SA CFS Maps on a HN6

Hi All,

I was wondering if anyone has had experince with putting CFS maps (.ecw format) on a HN6?

We are looking at getting one for my brigades appliance and so we are able to see our position on a moving map, particularly useful when our brigade is on a strike team operating in an unfamiliar area.

I have a HN5 but the included maps are only the 250k maps rather than the 50k detail that we need to see fire tracks.

Hema site says you can but mentions that the performance of ecw maps isn't as good as ozf.

http://hema.helpserve.com/Knowledgebase/Article/View/110/0/oziexplorer-4wd-mode---adding-extra-oziexplorer-4wd-maps-to-the-navigator

Any idea what sort of detail/clarity we can expect, will it be similar to the printed map book?

Thanks

Alex