Izzy,
There is also an varient without the Strike pack. This was also released by Club-M, and I think is far more rare than the UD Strike Version.
There are also larger scale valkyries produced by a company called REDs. The are a bit more rare and have far less detail than the UD Strike. IIRC, the scales offered were; 1/32, 1/24, and a whopping 1/20. Some members on these boards have these and it would be fantastic if they could share some pics. Or even offer some insight on these rare kits.