Aren't Sherman and Valentine ones fireable on the move? (and Cromwells ones too?)
After some testing I can confirm they are: they'll cancel the vehicle's current command but if you issue a further command they'll still fire.
They're not as good as Panzer Tactician
as an escape tool because they require aiming and take time to fire (five seconds for Sherman smoke, traverse time + three seconds for Cromwell smoke). Panzer Tactician fires as fast as you can hit the hotkey.
Unsure why Lago thinks UKF smoke shells are THAT bad.
I previously thought the tank had to stop to fire like Attack Ground. Having discovered they work on the same rules as the Sherman I think they're pretty neat now and I'll definitely use them more.