If it is on MUL list, it is no longer "foreign"

Have to say i'm happy to see the Malice on CapCon list. I keep toying with the idea of expanding my Capellan force with a Dark Age lance. At least the Tian-Zong, Shen Yi, figure the Malice would fit in well. But i should get around assembling and painting my Cappies first perhaps.
As a general rule, Capellans have rarely said no to 'Mechs, foreign or not. For example the Enforcer 4R was in use for some time after the St. Ives War brought some to the CapCon. Though the Dark Age CapCon has plenty of native 'Mech production, that doesn't mean foreign 'Mechs should be wasted.
I'll note the CapCon spent effort to specifically capture some, like the Wolverine 10R factory. (6/9/6 Wolverine with Targeting Computer and Snub-Nose PPC, pretty good.)
So, go for it if it feels fun or good.