Yes the Keller Funnel can be used to assist with the placement of any implant. Primary Benefits to the patient are-
Shorter incision lengths (typically by about 1-2 cm)
No touch technique (Reduced risk of infection or Capsular contracture)
More choices for incision placement (If longer incisions such as in some periolar approaches are not possible)
Reduced force on the implant and incision (Less risk of rupture of implant that you may initially not know about)
Primary downside is cost- Invariably it will add approx 100 dollars to your surgery- A cost worth it to many surgeons.
Dr Q Chivers.