Bumping this post with an update: Brewed an IPA today to give the Mosaic hop a trial run. Grist was mostly pils, with some munich and C-60 to an OG of ~1.075 and ~80 IBU's.
One ounce of Columbus pellets was the bittering charge, and I did a hopburst of Mosaic of 0.5 oz additions at 15, 10, 5 minutes, and another 0.5 oz for a 30-minute hopstand.
US-05 will handle the heavy lifting in the primary.
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My impressions of Mosaic hops so far: I like them so far. From the aroma, it has the dank character of Columbus, with some of the tropical fruit notes of Citra (but more subdued than Citra). I don't get much Simcoe-ish character at all, save for a slight hint of pine.
If anyone is interested, I can update this thread when I put the beer on tap in a few weeks.