Could Kalista's Ultimate Become Unusable While Partner is Suppressed?

Suppression is the ultimate form of CC, only able to be stopped via interruption or QSS... until now. Kalista's ultimate pulls in her partner. If Warwick or Malzahar are suppressing her partner, Kalista's ult will completely negate it, pulling in the suppressed partner and making him/her invulnerable.

While I can understand her partner becoming untargetable and, ultimately invulnerable, perhaps there should be some situations where it cannot be cast. I am proposing that suppression is one of those instances. While suppressing the support isn't usually a great option, it is important if you catch him/her out or if the soulbound partner is someone other than the support.