seems to have been a slight Fel's Wrath, but I got a game in yesterday where my opponent could convince me of the viability of this adorable little bugger
basically, I completely forgot the Raider had such a potent anti-squadron and just piled in like an idiot on top of an opposing Bossk. Then, this started happening:

as he had initiative, he then activated first the following turn
That little Raider later got mulched by a TLRC Cr-90 and a Slaved Turret Salvation, but he almost literally ate my entire compliment of 2 As and 3 Yt-2400s (one Dash) by himself
I'm sporting a profound respect for that otherwise unassuming little ship, and I'd have to hazard a guess that Impetuous could be pretty **** decent