I went to try this out yesterday and ended up buying it. I'm not a big hitter with the driver, I average 220-230 total yards with about 200 carry. I brought my driver to hit in comparison. With the Mini 1.5 I was launching at 14.5 degrees and getting about 250 total yards off a small tee. I was way more consistent with it as well.
As for hitting it off the deck, its gonna take some practice. I hit it "well" about one out of three swings and would get 220 yards or so out of it when I did. When I mistruck it, I averaged 170. My current 3 wood is easier to hit off the deck but I only get about 200 off the deck.
In the end, I'm replacing my 3 wood with the Mini and I'll take it to the range to work on the off the deck scenario.