Hiya.
Update!
I just bought GROME II yesterday.

No time to play then, but I have all day today and tomorrow...and on Monday I should be receiving a beta version of their GROMEII --> A7 plugin...

Right now I'm trying to get my head around how the program organizes itself for terrain manipulation (it uses a sort of "Photoshop layers" approach). You make layers for different terrain effects you want (hills, planes, mountins, etc.)..and you can blend these together. You have to do some 'pre-selecting' of layers before using most tools, and those tools will only affect the layers you wanted it to. It has some pretty sweet selection tools you can use, however, using height, layer and angle/slope to select parts in your terrain that you can then tweak. So, if you wanted to add rolling plains to a terrain filled with mountains, you could use the selection 'procedural' to have it select only the parts of the map that are under, say 100 meters. Then you apply smoothing or other heightmap generators to only that selection...giving you mountains that smoothly flow out into gentle, rolling plains.
Oh, and the terrains can be *FRICKIN HUGE* if you don't watch yourself. My first test of a 2 tile by 2 tile map (at a resolution of 256 per tile) ended up being something like 5km x 5km in size! O_O
I can't wait to figure out how to texture, paint grass, bushes, trees, etc. ,add some models, and export.
