It definitely is, took it for a quick spin last night and so far so good.
Memory performance is feeling very nice, I only have average kits of PSC, at least on air. It managed to clock one of my kits to 2526 8-12-7-26 with tight tertiaries. That's nothing special, but it is better than I managed to get booting on the MVF and this passed 32m. Just LSC with no maxmem, pf or other tweaks put it in the 49s zone, not bad efficiency considering either.
Software is fantastic. One real gripe I had with the MVF is that if you don't have a laptop handy then you're pretty well screwed. I don't like clocking too far in bios as this chip I have has a mean CBB at around -120, -100 depending on how it feels. I don't want to be cooking the pot and booting at -100c and 1.9v so I do most of my clocking in windows. The software Asus provides is absolutely terrible and bloated. It starts around 10 services I can just never get rid of.
ASRock starts one service, a single service that politely screws off when you close the program. Rapid OC works really well, a tiny little program that sits in the background and doesn't do any harm. Set a hotkey to control what the Rapid OC buttons do (I have 1 for bclk, 2 for multi and 3 for vcore) and you're set. Formula Drive is nice too, again it doesn't bring with it a million unrequired services. You will need to install Intel's ME drivers if you want to adjust bclk though.
All in all I'm quite impressed so far, will be taking it cold today.