I am surprised?
Ice is one of the biggest killers in our industry but I am getting strong vibes that safety is over ridden by cost?
Is it not the captain who is in charge to inspect the aircraft and sign that he is satisfied that the aircraft is de-iced properly.
The visual check is one and not very reliable but the good old get me hand in it is! (Tactile Check)
I know of some Pilots who put their flasher macks and hi viz on and get of their asses and come out to check.
Other stations do also get their Engineers to do the tactile test for them as this saves time.
I saw a J41 in LBA had a lot of fluid sprayed onto it and visually it looked A1 for flying, I ran my hand over the flaps to find large patches of clear ice?
There are old pilots and bold pilots but never old bold pilots!
(Not talking of the hairless type!)
