Being a 6'1" Clyde, I'm right in the perfect height range for a 29er; I don't, however, think much of the way they ride.
I AM intrigued by Banshee's new FS 29er frame; 130mm travel, and it looks STURDY. Now, experience tells me that a 29er frame can be used with 26" wheels; the extra BB drop is a weird feeling, but a manageable issue. It's all in how 'silly' you want to get with a bike....
I may indulge, if I can get something like the Banshee; otherwise, not for me.