I just got my fastpacks yesterday, 2 of them (thanks Toywave...) and I just have to say these things are truly amazing. The plastic used is heavy, snaps together perfectly, the painting rocks. I have to say that I am TOTALY satisfied with these. I just can't imagine my valks without them anymore.
As Graham said, they are quite heavy with the fastpacks on. Also, I need to say that I've ween MPC fastpacks this weekend in a Toronto store and I kinda feel bad for Toynami now that I saw both.
If you hesitated to buy a standalone 1/48 VF-1 now you should consider ordering both together in a single order, I bet even Sandpebbleone would love these...
Thanks Yamato
(runs back to play with kick ass valk...)