I don't have FreeviewHD
and I get HD through Sky, but at the time, SkyHD was 1080i, so being the financially challenged person I am, I bought a perfectly acceptable not-a-known-brand TV that would do 1080i and not 1080p. This was several years ago, so I guess that you could say that I am an early adopter.
The TV still works find, but I would appreciate advanced warning if the Beeb do the same on Sky, because the TV won't handle it!
Mind you, by SkyHD box (a Thompson) is also a bit long-in-the-tooth, and I've had to fix it twice already (power supply and hard disk), so I doubt it would cope with 1080p anyway.
I also suggest to anybody who buys a TV in the sub-£250 price range to check the display panel resolution on their HD Ready TV (some of which I'm sure actually carry the "Full-HD Ready" logo). Chances are the panel does not have a resolution of 1920x1080 anyway, so it is a moot point.
I hate manufacturers being able to force new purchases on their customers.