Maybe I've just got lucky. But now that those seats are premium, doesn't that mean that they will typically be occupied by pax with status? or by the lucky VBIF who checks in right after the pax with status gets upgraded?
Possibly...and to make sure I wasn't spouting bollocks, I checked the seat map. 77Ws appear not to have the bassinets in the first economy cabin, just in the back two, but the 77Ls have them in both economy cabins (ie right behind row 11).
I just don't think it's worth the risk (and look at my signature...
)