It's not quite so durable, as like howlrunner, serissu becomes Biggs in that situation, and you'll likely not get her ability to go off very much, if at all
Aye, though even if she's playing the Biggs to Xizors wedge, if that means everything else is getting through largely unharmed then that may be acceptable. Even if given a little minor hull/stealth investment. to ensure that she is eating more then her lions share of firepower.
As said though, it's one of those ideas I'm pondering over and whether the 8 points is otherwise used wisely. Another altnerative could be to make her another Z-95 and stick a little disruptive oridence somewhere. Or even buy a 5th Z-95 (71-91) and see whether Xizor can function off 9 points.