To me, this thread is gold dust, it leaves me clear on what to look out for. First off, a Quickly taken throw in (QTTI) is permissible but, unlike a Quick Throw In, must conform to all the laws of a line out. Herein lies the rub, it is so unlikely that these laws are being met that I think the chance of a QTTI coming off are thin.
I would reckon the defending team are in a surprisingly good position, as they should have been given reasonable time to match numbers, hence they are unlikely to fall foul off offside laws (any thoughts here?). The attacking team, however, don't get this leeway so they are likely to have people in an offside zone, so ping (again any thoughts here?).
The over riding thought for the refs to hang onto here is that a QTTI does not have any of the leeway of a QTI.