I really like it! I see the Dvorak influence on the home row, but the RL placements are better. U doesn't really "need" to be on the homerow, etc.
Things I don't like: Stupid punctuation placement. That was one of the best features of Dvorak, and one of the most overlooked layout changes. Punctuation is used a lot, it has no purpose on the bottom row (All except for the semicolon; no-one uses that anymore anyway.)
Normally I'd also complain about the close-to-qwerty ZXCV placement (Being "like" a flawed layout is one of the main reasons I didn't do colemak), but it's a real balance between utility with stupid-windows-shortcuts, and utility of actually having well placed keys.
(I put cut/copy/paste/etc. on programmable keys above the function row)
So, it's rather good overall. I haven't looked into what digraphs are easy/hard with it, but overall it shows a much better design than some I've seen.
Have you run it through a layout tester?