Yes - I have First longhauls booked in O, and a domestic biz in I.

And I've also found ANA very reliable. In case you don't know what we're taking about, this is from the sticky in the bmi forum:

Checking Award Seat Availability:
So, you've got your miles, you know where you want to go, now how do you check *alliance award class availability? This is an obscure process, but definitely worth it, as it makes calling BMI to book your award flights much much easier:

Join All Nippon Airways (ANA) frequent flyer club called the ANA Mileage Club --> http://www.anaskyweb.com/us/e/amc/index.html

Once you’ve registered they’ll email you your Mileage Club number straight away (as well as send you a nice pack in the post within a few weeks). Once you’ve got that number, go here --> https://aswbe-i.ana.co.jp/p_per/sky_...SearchLogin.do and login. Then click on the middle blue bar on the right “Star Alliance flight awards”, and search for the flights you want. NB Make sure you search sector by sector, it struggles with the concept of stopovers! Also it struggles with LHR-JFK (now no longer served by *A), but it will be fine if you do LHR-FRA and FRA-JFK for example.

When you see the results page, an orange box with a circle in it signifies that there is award availability on the selected flight (table row) and class (table column).