If you've warmed up the engines, then icing in the air lines shouldn't be a problem.
We had an iced up air line after a blizzard many years ago. -The engine went from idle to 117% N2 in less than three seconds when the throttle was cracked from idle. Ripped the tail rotor drive shaft into several sections.
when will P&W make a digital fuel control for the 212 / 412? The world waits!